How to use: Each column is a major scale; each row is a starting note (C at the top, B at the bottom). A cell shows how that note is altered in that key, and which mode you get when playing the scale from it. Drag a column header to reorder scales. Hover a row to follow one note across every key. Practice mode hides the modes (or the notes) until you hover — and prints as a fill-in worksheet. The ▶ Mode Trainer button opens the quiz: choose a game (find the note, the mode or the scale, or name the alteration of a note in a key), the keys to drill, a session length and a time limit — then review your weak spots at the end. Fretboard degrees lights one note of a 3-notes-per-string major shape on a 7-string bass: name its degree from the shape alone. In hands-off style nothing needs clicking: a voice reads the clues, you get a couple of seconds to think, then another voice gives the answer. Below the matrix, the theory lesson shows each mode as a shape on the bass neck — click any cell of the matrix to open that mode there. Title and subtitle are editable; the moon/sun button switches between dark and light.
Mode spectrumbrightest → darkest — the alterations shown are relative to the major scale
Lydian4th degree · ♯4
Ionian1st degree · major
Mixolydian5th degree · ♭7
Dorian2nd degree · ♭3 ♭7
Aeolian6th degree · ♭3 ♭6 ♭7
Phrygian3rd degree · ♭2 ♭3 ♭6 ♭7
Locrian7th degree · ♭2 ♭3 ♭5 ♭6 ♭7
Same row = same starting note. When the key changes, keep your note and switch to the mode written in the new column — that is all a key change asks of you.
Theory lesson
Modes on the fretboard
Seven modes, one set of notes. On the bass, each mode is a three-notes-per-string shape that starts on a different degree of the major scale — learn where each degree sits in the shapes, and every mode of every key follows.
root of the mode
colour note — what makes the mode sound like itself
Colours = degree in the key, as in the matrix
String by string
Three notes on every string, spaced Whole or Half steps — only three string-shapes exist.