Interval names, symbols, example notes, and audio.
Music Reference and Theory
Find details on scales, chords, arpeggios, chord progressions and how
to play these on the guitar. All guitar references can be suited to
standard or alternate tunings.
Knowledge and Ear Training Drills
Test your knowledge, improve you ability to know what you hear, and
strengthen your weak points with these drills.
Intervals
Next Note
Learn to construct an interval from a starting note.
Ear Training
Learn to name intervals that you hear.
Scales
Notes in scale
Learn to list notes in a scale.
Scale by notes
Learn to name a scale from a list of notes.
Chords
Notes in chords
Learn to list the notes in a chord.
Chord by notes
Learn to name a chord from a list of notes.
What's New
June 7, 2026
Scale charts and chart diagram improvements
This update is all about scale charts. There are two issues that I'm hoping to address with these changes.
The first is the quality of the charts generated. Previously, for some keys and tunings, we'd get a mix of good charts and charts that didn't make much sense - these were all correct, though some were just less likely to be what you wanted. I've added a new filter to the process that will eliminate charts with weird skipped strings and scenarios where you might only play one note on a given string.
To further help you find the scale chart you are looking for, I've also added a "Chart Style" option that filters charts by ascending, descending, or fixed position. This refers the direction you are moving on the fretboard. Ascending will generate charts that climb the fretboard as you work your way up the scale and descending will move the other direction, fixed charts will keep you in mostly the same position.
The last change for the week is to the charts diagrams that are generated for these scales. Scales that spanned many frets would be difficult to track sometimes and would involve a lot of counting of frets to see where you were. To fix this, I now show fret markers on every-other fret, rather than just the first, to help you keep track of where you are. This change is also present in chord charts and arpeggios, though mostly useful for scales.
Examples:
May 21, 2026
Other chords with same chart shape
Have you ever taken a chord on the guitar, and slid it up a number of frets to produce another chord? This week's update explores that concept a bit.
On the chord chart detail view, you'll now see a new section for 'Other chords with the same shape', that will show you just this. Other chords that can be produced by sliding that shape to a different position on the fretboard. There are a surprising number of chords that this works for.
This can be a helpful way to make certain songs easier, give some variety from your classic cowboy chords, or even inspire you with some new chord progression ideas!
Examples: