iPhone · iPad · Mac
SUS4 Scale Lab
104 scales and modes, lit up on a guitar fretboard and piano keys.
SUS4 Scale Lab shows scales and modes on a guitar fretboard and a piano keyboard. Pick a root note and a scale, and every note lights up across the first 12 frets in standard tuning and over two octaves of keys, with the root highlighted, on iPhone, iPad and Mac.
The catalogue holds 104 scales across 15 categories: the major modes, melodic and harmonic minor and their modes, harmonic major, pentatonics, blues, bebop, whole tone, diminished and other symmetric scales, plus Indian ragas, Japanese scales and world folk scales. Each note is labelled with its scale degree, and a row of diatonic chords lets you hear the harmony the scale implies.
Tap any key or fret to hear it, or play the whole scale up and down at a tempo you set. A Theory tab adds background on the core scales, a side-by-side mode comparison and practice patterns in thirds, fourths and arpeggios. Scale Lab removes the lookup step from practice and composition so you can stay in the music.
Available on
Goes well with
- SUS4 Capo CalcPick a key, get the capo position and shape. Done.
- SUS4 Chord IDPlay a chord into the mic and see its name.
- SUS4 Backing TracksJam over drums, bass and chords in any key and tempo, or build your own.
Made by a working recording studio
SUS4 is made by 4chordsStudios, a recording studio in a quiet UK village with a live room and a Dolby Atmos mixing room. We work with independent artists from the first session to release day and beyond.