The Diagram

Loop off

The Controller Board

Pattern
Count-in enter on
Tempo: 100 BPM
Meter

The Band

Backing
Bass
Comp
Drums

The chord

Click any note to hear it.

Chord shapes

The smooth path

Where you have heard it

Exercises

Not tunes. Each sets the board up and drops you into it — or build your own out of the parts.

Songs

The changes only, transposed to any key. Play over the form.

Printable sheets ↗
♭50 ♯50

Listening

Which input the guitar button on the Practice screen listens to. A guitar through an interface is a far cleaner signal than one across a room — especially on the wound strings, where a laptop microphone hears the harmonics louder than the note itself.

An interface is recognised by name, which browsers hide until the microphone has been allowed once. Press the microphone button on the Practice screen once and the names appear. If the guess is wrong, say so here.

Notation

How chords are written on the board and in the titles.

The board

Which part of the neck you look at, and how much of it. The arrow keys move the window too, from anywhere.

Every pitch its own colour is the fastest way to see a shape. It is also the easiest thing to lean on: players taught with coloured notes could not read uncoloured ones. Switch it off for a session now and then.

Drill session

Every answer is recorded, so the history is real from the first session.

Mixed

recommended

Several angles at once, shuffled. It feels worse than drilling one angle at a time and it is remembered better — which is the whole reason this app has eight of them rather than one.

Angles
Questions
Keys
Chord types

Shape trainer

One chord shape at a time. Play it through in pieces — whole shape, then root and third, then adding a note a rung at a time. Each rung ends with the board going blank and you playing it to a click: three clean passes in a row before the next rung unlocks.
Train
Chord
Type
Shapes
Question 1 of 20 0 correct
0 of 3

Line trainer

Guide tones over changes. One note per chord — the 3rd or the 7th, whichever the line reaches by step — played on the beat the chord arrives. Any octave counts: it is about finding the note, not one string.
Key
Changes
Tempo

Session done

Score
Correct
Weakest angle

Nothing recorded yet

Run a drill session and this fills in. The percentage is weighted across the ways of knowing a chord, and it decays, so it stays honest about what you would actually be able to play today.