Online music theory tools

ToneGym tools will help you to understand various components of musical theory. Learn in depth how chords and scales are constructed, create progressions according to principles of voice leading, use the online piano recorder to play, record and share compositions with friends.

Progression generator

The progression generator allows you to build and play chord progressions. The online generator will play chord progression according to voice-leading principles.

Chord player

The online chord player allows you to play common chords in harmonic and melodic play modes using different roots to learn their DNA and inversions.

Circle of fifths

The circle of fifths is an online interactive map that describes the relationships among the 12 tonics of the chromatic scale. Change tonic, mode, and layout to discover the relations, or mathematical patterns between musical notes, chords, and scales.

Scale analyser

The online scale analyser allows you to play common scales in ascending and descending play modes using different roots to learn their DNA.

Piano recorder

The piano recorder allows you to play, record and share compositions.

Interval memorizer

Interval memorizer is an online tool that will help you learn and memorize musical intervals. Associate intervals with reference songs, get suggestions from other members and build your personal interval song chart.