FREE GUITAR MUSIC THEORY

You know the shapes.
Now understand the music.

You can play chords, riffs and scale patterns. But do you know why those notes work together? Build real musical understanding—one small, playable idea at a time.

117 short lessons12 connected parts9 explained studies
THE MOMENT IT CLICKSInteractive preview
One note. Two musical jobs.

The same note can mean something different when the chord changes beneath it.

A
IN THE KEY OF C MAJOR6th degree
OVER AN F MAJOR CHORDMajor third
Fretboard with the melody targets E, A, B and C over the chords C, F, G and C
A course for guitarists who know some shapes, but want to understand what they play.No prior theory knowledge required
01
Hear the idea

Listen first, then name the sound.

02
Find it on the guitar

Use clear, clickable fretboard maps.

03
Make it your own

Change a note and explain why.

BUILT AROUND UNDERSTANDING

From memorised shapes to musical choices.

Tabs can tell you where to put your fingers. Here, you'll also learn what those notes are, how they relate to the chords, and what happens when you change them.

STEP 01

Hear one new relationship.

Begin with a short example. We introduce one main idea, not a whole page of unrelated facts.

STEP 02

See it under your fingers.

Fretboard diagrams, chord notes and warm electric-guitar playback connect theory to playing.

STEP 03

Use it in actual music.

Strum a progression, follow a phrase, then make a deliberate musical change of your own.

LEARN BY LISTENING

More than theory on a page.

Hear the music, follow the chord changes, and gradually understand each note in a real phrase. Even the complete studies are included in the free course.

Warm clean-electric guitarSlow versionsBacking tracks
Explore an explained solo
LISTENING EXAMPLE · C MAJOR

Hear the chords become music.

C IF IVG VC I
Sampled electric guitar · 4-beat count-inView the study ↗

THE COMPLETE FREE COURSE

A learning path you can grow into.

Explore all 12 parts, from notes and rhythm to chord construction, pentatonics, modes and, later, blues. Work through one small idea at a time.

Your learning path

Open one part at a time. Later topics can wait until their foundations feel familiar.

01Start with the sounds and the names

Make the guitar you already play less mysterious. Work on one string before opening up the whole neck.

  1. 001You already have a starting point
  2. 002Six strings, six addresses
  3. 003Higher is not the same as louder
  4. 004The seven-letter musical alphabet
  5. 005One fret is one semitone
  6. 006Two frets make a whole tone
  7. 007A sharp raises a note
  8. 008A flat lowers a note
  9. 009The octave repeats a name
  10. 010Practice stop: a small note map · practice
02Give the notes time

Build a dependable pulse, then add held notes, silence, subdivision and a simple strum. Keep the fretting easy.

  1. 011Find a pulse you can keep
  2. 012Put four beats in a bar
  3. 013Quarter notes: one sound per beat
  4. 014Hold a note while the beat continues
  5. 015Silence has a duration too
  6. 016Divide each beat into two
  7. 017Give your strumming hand a steady motion
  8. 018Accent a beat without making it early
  9. 019Enter between the beats
  10. 020Practice stop: four bars that stay together · practice
03Hear and measure relationships

Learn a few useful intervals carefully. Separate letter counting from fret movement before using chord formulas.

  1. 021An interval needs a reference
  2. 022Count letters to get the interval number
  3. 023Hear major and minor thirds
  4. 024Add a perfect fifth
  5. 025A fourth is another useful landmark
  6. 026Use an interval reference card
  7. 027Listen, predict, then check · practice
  8. 028Practice stop: explain one familiar shape · practice
04Build and use one major scale

Understand C major in a small space, then transfer the construction method to G. Make a little music before collecting positions.

  1. 029A scale is a chosen route
  2. 030Build C major on one string
  3. 031Give the scale notes numbers
  4. 032Put C major in one small area
  5. 033Build another key instead of memorising it
  6. 034Hear a note as home
  7. 035Make a phrase with two notes
  8. 036Practice stop: a scale is now a tool · practice
05Understand the chords you already hold

Build major and minor triads first. Decode familiar grips, then gradually introduce bass notes, inversions and the other triad qualities.

  1. 037A chord and an arpeggio share ingredients
  2. 038Build one major triad
  3. 039Decode your open C shape
  4. 040Change major to minor with one note
  5. 041Repeat the major/minor idea from A
  6. 042Practice stop: two familiar triads in time · practice
  7. 043The bass note does not always name the chord
  8. 044Find C major in a second voicing
  9. 045A diminished triad changes the fifth too
  10. 046An augmented triad raises the fifth
06Let chords guide your first solo

Build one chord family, strum it, find simple destinations, and join tiny phrases. The full study arrives only after its ingredients are familiar.

  1. 047Build a chord using only scale notes
  2. 048Meet the C-major chord family
  3. 049Roman numerals describe chord relationships
  4. 050Hear just one chord change
  5. 051Strum a complete four-bar progression
  6. 052Play one root over each chord
  7. 053Stay on C and choose its third
  8. 054One note can have two useful labels
  9. 055Connect two chord-tone phrases
  10. 056A first complete major-key melody
  11. 057Add connecting notes to the major study
  12. 058Practice stop: move an understood idea · practice
07Make a minor key feel like home

Establish natural minor as its own sound. Separate parallel from relative comparisons, then build a minor melody in small steps.

  1. 059Build A natural minor
  2. 060Parallel scales keep the same tonic
  3. 061Relative keys share notes, not their home
  4. 062Build the natural-minor chord family
  5. 063Strum a minor progression before soloing
  6. 064Hear the notes the pentatonic will leave out
  7. 065Build a short natural-minor answer
  8. 066Your explained natural-minor solo
  9. 067Practice stop: major and minor, without shortcuts · practice
08Add the seventh, one ingredient at a time

Learn maj7, m7 and dominant 7 separately before comparing their diatonic roles. Use simple voicings and melodic targets.

  1. 068Hear two kinds of seventh
  2. 069Major seventh: extend a major triad
  3. 070Minor seventh: extend a minor triad
  4. 071Dominant seventh: major third, minor seventh
  5. 072Build seventh chords inside C major
  6. 073Use a smaller voicing without losing the chord
  7. 074Hear V7 return to I
  8. 075Follow thirds and sevenths through four chords
  9. 076Extension: why E major often leads to A minor · optional
09Pentatonics become musical choices

Derive the five-note collections from understood scales. Build phrases, learn precise expressive targets and finish with an explained rock solo.

  1. 077Major pentatonic: choose five degrees
  2. 078An explained major-pentatonic study
  3. 079Minor pentatonic: simplify natural minor
  4. 080Decode the familiar minor-pentatonic box
  5. 081One string can make a phrase
  6. 082Repeat a motif and change its answer
  7. 083Slides have starting and destination notes
  8. 084Hammer-ons keep the second note intentional
  9. 085Pull-offs give the lower note a clear start
  10. 086Bend to a named pitch
  11. 087Your explained minor-pentatonic rock solo
  12. 088Practice stop: make a two-bar solo your own · practice
10Connect the neck without losing the music

Use CAGED as chord landmarks, then relocate an understood phrase. Three-notes-per-string is an optional route, not another theory system.

  1. 089CAGED is a map of chord forms
  2. 090Connect the C and A form families
  3. 091Use the G form as a set of fragments
  4. 092Find the E and D form families
  5. 093Put an arpeggio inside the map
  6. 094Cross a position boundary with a purpose · practice
  7. 095Optional route: three notes per string · optional
  8. 096Practice stop: a map that serves a phrase · practice
11Modes with an audible reason

Keep a tonic fixed and change one characteristic interval. Apply Dorian and Mixolydian first; explore the remaining modes in separate optional lessons.

  1. 097A mode is not just a starting fret
  2. 098Dorian changes the sixth of natural minor
  3. 099Let Am and D reveal Dorian
  4. 100Your explained Dorian study
  5. 101Mixolydian lowers the major seventh
  6. 102Strum a Mixolydian setting
  7. 103Your explained Mixolydian study
  8. 104Optional colour: Lydian raises the fourth · optional
  9. 105Optional colour: Phrygian lowers the second · optional
  10. 106Optional colour: Locrian lowers the fifth too · optional
  11. 107Practice stop: choose the sound before the map · practice
12Blues, with the foundations still clear

Now introduce the deliberate mixture: twelve-bar form, dominant-seventh harmony, two blues scales and expressive pitches. Finish by explaining your own musical choices.

  1. 108Learn the twelve-bar form before the notes
  2. 109Blues harmony changes our diatonic baseline
  3. 110Feel a shuffle without losing the beat
  4. 111Minor blues adds the flat fifth
  5. 112Major blues adds the minor third
  6. 113One C changes role as the blues chord changes
  7. 114Target the blues chord tones before adding colour
  8. 115Make expression serve a clear pitch
  9. 116Your complete explained blues solo
  10. 117Your final task: explain and change the music

KEEP LEARNING, FREE

Learn at your pace.

All 117 lessons and the included musical studies are free to read online. Come back whenever you like, and revisit the examples as often as you need.

A FEW GOOD QUESTIONS

Before you begin.

There's no test to enter and no schedule to keep up with. These guides explain how to get the most from each short lesson.

How to use the course

This free course is for guitarists who can already play some chords, tabs or patterns and want to understand what those movements mean. No previous theory qualification or reading fluency is required. A standard-tuned six-string guitar is the reference instrument. The goal is not to collect every diagram: it is to connect what you play, hear and understand.

Use one lesson per sitting as a starting point, and repeat it when necessary. A lesson may take a few minutes to read but more than one practice session to settle. There is no imposed daily deadline and no need to complete the entire roadmap before enjoying a short musical example.

Each lesson has one principal discovery, a worked example, a small guided task, a question with an explained answer, and a readiness statement. Answer panels are hidden until requested in the reader. Practice-only stops introduce no compulsory new theory. Optional extensions can be skipped without losing the core route.

Read and play in separate passes. First listen to the example. Next locate the notes. Later inspect their labels and explain the relationship. Do not try to process fret numbers, note names, scale degrees, chord roles and rhythm all at once. The detailed solo tables are reference material to reveal one bar at a time.

The entire concept course and the nine included studies can be used for free. You can practise without creating an account.

A gentle practice session can begin with a minute or two recalling the last idea, followed by one new explanation. Listen once without playing. Try the worked example slowly, then attempt the independent question. Check its answer and write one observation. Finish before you feel obliged to cram in the next topic.

After two or three lessons, return to an earlier task in a different order. Reconstruct a note from a known landmark, find a chord tone without running a full scale, or clap a rhythm before fretting it. The practice-stop lessons provide longer pauses for consolidation.

A readiness check is not a speed test. You may use a reference map when reconstructing the relationship. Before moving on, aim to demonstrate it after a short break and explain it in ordinary words. An experienced player can skip a familiar lesson after doing its check, but should not assume that physical fluency proves the theoretical connection.

Your notes need only four headings: what I tried; what I can now explain; what still feels unclear; the small task I will return to. No recordings, uploads or lengthy practice diary are required.

Notation and playback guide

Standard tuning, low to high: E2–A2–D3–G3–B3–E4. String 1 is high E, string 6 low E. Tab has high E at the top. A 0 means an open string; x means omit the string. Scientific pitch numbers such as C4 distinguish sounding octaves; they are not fret numbers. A note’s displayed guitar position is one verified option, not the only place to play it.

Rhythmic durations in the study tables are quarter-note beats: 1 = one beat, 0.5 = half a beat, 2 = two beats. All main studies are in 4/4. Every recording begins with a four-beat count-in. Slower recordings are rendered at 50 BPM without lowering the pitch. Backing recordings repeat the stated form three times, with one count-in at the very beginning; there is no extra count-in between rounds.

In the detailed study tables, degree labels use the parallel-major interval reference: in A natural minor, C is b3 and F is b6 above A. Their ordinal positions in the natural-minor list are third and sixth. Chord-role labels use the current chord root instead. Major-key Roman numerals use I–ii–iii–IV–V–vi–vii°. Natural-minor numerals are written i–ii°–bIII–iv–v–bVI–bVII with the parallel-major root reference made explicit.

Sampled-guitar playback is programmed from recordings of individual notes, not a human playing each complete passage. Basic study tracks use picked-note articulation; pitch targets for slides, hammer-ons, pull-offs, bends and vibrato are taught separately. Audio timbre is an aid to learning, not evidence of a filmed hand technique. Keep listening volume comfortable and stop physical exercises that hurt.

PLAY WITH UNDERSTANDING

Know what you're playing.
And why it works.

Start your first lesson