Impro-Visor

What Impro-Visor is

Impro-Visor is a free desktop music notation program for composing and studying jazz solos. It helps musicians hear solos, examine how they are built, and follow chord changes. Users can enter lead sheets and solos by clicking on the notation or writing free-form text. From chords, the program generates rhythm-section accompaniment that can serve as a backing track. Optional note colors show how notes relate to chords and scales, and a roadmap editor analyzes implied keys and idiomatic progressions. It can generate licks or choruses with a user-modifiable grammar and learn grammars from a collection of solos. Users can define accompaniment styles or create them from MIDI performances. Solos and lead-sheet melodies can be exported as MIDI or MusicXML, with accompaniment optionally included in MIDI exports. It runs on Windows, macOS, and Linux platforms supporting Java 1.8 or later, and supports MIDI and MusicXML. MIDI import is limited to one track at a time; MusicXML export handles one chorus at a time, and direct MusicXML import is not supported. Its notation centers on a single monophonic solo line, not stacked notes or double stops.