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Free guitar theory quiz

Theory Trainer

Short drills that make theory automatic on the guitar: notes on the neck, intervals, chord spelling, keys, Roman numerals and modes. Three levels, and the questions you miss come back more often.

Free resources

Fretboard Navigator

Tap any note to hear it. Tap the chips below to hide or show individual notes.
01

Scale

02

Arpeggio

03

Chord

-

Display

Tuning

Pick a preset, or set each string yourself. Strings run from thickest (left) to thinnest (right).
Understand it

Theory Trainer

0Correct
0Streak
0Best
-Accuracy
Level progress
Practise these next
The lesson behind it
Your scores and weak spots are remembered in this browser.
Work it out

Chord & Key Finder

Name a chord: tap a fret on each string. Tap it again to mute the string.
Find the key: add the chords from a song

Practise

Practice

Exercise Generator

Guitar, standard tuning (E A D G B E). Tap any number in the tab to hear it.
Keep time

Metronome & Drum Machine

90BPM · Andante
Stopped
Clicks per beat
▶Tap a column to change that click: accent, normal, soft or silent. Silence a beat or two to make yourself feel the time.

Add BPM every bars, up to BPM.

Play bars, then go quiet for . Keep playing through the gap and see if you land back in time.

Stop after minutes.

Tempo, accents and your drum beat are remembered in this browser. Copy link shares the beat with anyone.
Lock in

Strum Trainer

Tap boxes to add
StrumAccent: hit harderMute: percussive chopRest: hand still moves

Your hand keeps moving down and up the whole time. The boxes only show when it touches the strings.

Keep going

Practice Log

0
day streak

Log today
Last 16 weeks
Milestones

Your log is saved in this browser, on this device.

Play & write

Jam

Backing Track Creator

Stopped
Chords in this key
Your progression ·
What to play over each chord
Next
Chord rootChord tonesScale notesNext chord (on the last beat)
Add any other chord
Prefer a full band? Find matching tracks on YouTube
Click a chord to add it to the end. Drag chords or use the arrows to reorder, and tap the length to change how long each one lasts. Changes come in the next time round. The fretboard follows the music: it lights up each chord’s notes as the chord arrives, with a scale that fits it, and rings the next chord’s notes on the last beat. Click a chord to look at it while stopped. Use the mixer to balance the band, or turn the guitar down to play the chords yourself.
Write

Tab Creator

Link to next note
This note
No rhythmic value
Rhythm
No rhythm notation needed: the space between notes is the rhythm. Each beat is the same width, so a note twice as far from the next one lasts twice as long. Notes ring until the next note on the same string.
Keyboard shortcuts (click on the tab first)
0 - 9Fret number (type 1 then 2 for 12)
← →Move along the tab
↑ ↓Change string
SpacePlay / stop (plays from the cursor)
DeleteRemove note or selection
HHammer-on / pull-off to next note
SSlide to next note
BBend (press again: ½, 1½, off)
RRelease the bend
VVibrato
MPalm mute
XDead note
.Stop the string ringing
TTap
NNatural harmonic
PPinch harmonic
GGrace note (then type its fret)
ISlide in
OSlide out
Shift + arrowsSelect notes (or click and drag)
Ctrl C / X / VCopy, cut, paste
Ctrl ZUndo (Ctrl Shift Z to redo)
EscClear the selection
Make it fit

Capo & Transpose

Same sound, easier shapes
CapoPlay these shapes

Ears & tuning

Train your ears

Ear Trainer

Test me on
Keyboard: number keys to answer, Space to hear it again, Enter for the next one. Your choices and scores are remembered in this browser.
Get set up

Guitar Tuner

Tap a string to hear it, or start the tuner and play

The tuner listens through your microphone, works out which string you're playing and goes green when you're within 3 cents. Nothing is recorded or sent anywhere. The tuner is also in the menu at the top of every page.

Want feedback on how you're actually playing these?

Send Joe a clip and get personal feedback on your playing, plus a plan for what to work on next.

See Mentorship Plans

How to use the Theory Trainer

Pick a drill, choose your level and answer as many questions as you can. Each answer shows why it's right, and the trainer keeps track of what you miss so those questions come back more often. Your score, streak and weak spots are saved in this browser.

The drills

  • Notes on the neck: a note lights up on the fretboard and you name it. Beginner starts on the bottom two strings, frets 0 to 5.
  • Intervals: name the distance between two notes from their shape on the fretboard.
  • Build the chord: pick the right spelling for chords from major and minor up to 7ths and half diminished.
  • Keys: sharps and flats, the chords in a key and relative minors.
  • Roman numerals: see a progression in a key and name it as numbers, like I V vi IV.
  • Modes: what makes each mode sound the way it does, and which major scale it comes from.

How to practise with it

Do one drill for two minutes a day rather than all of them once a week. When you can do a level without thinking, move up. Then use what you've learnt straight away: find the notes on the Fretboard Navigator, or hear the intervals in the Ear Trainer.

Frequently asked questions

What is the fastest way to learn the notes on the guitar?

Learn the notes on the low E and A strings first, then use octave shapes to find the same notes on the other strings. Short daily quizzes, a couple of minutes at a time, work much better than long sessions.

Do I need to know music theory to play guitar?

No, but a little goes a long way. Knowing the notes, intervals and the chords in a key makes it much easier to learn songs, improvise and write your own music.

What are Roman numerals in music?

They number the chords in a key by the scale note they start on. In C major, I is C, IV is F and V is G. Upper case means major and lower case means minor, so a progression like I V vi IV works in any key.

What is the difference between modes?

Each mode is a major scale started from a different note, which changes which notes sound like home. Dorian is minor with a major 6th, Lydian is major with a sharp 4th, and Mixolydian is major with a flat 7th.

Is my progress saved?

Yes. Your scores, streak and weak spots are remembered in this browser, so you can pick up where you left off.

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