What are some alternatives?
When comparing Liquid Music and Helio Workstation, you can also consider the following products
Odesi - ODESI is a music sketchpad that exports your projects to Audio and MIDI.
Captain Chords - Write chord progressions in your favorite DAW
RapidComposer - MusicDevelopments RapidComposer: Music Prototyping and Automated Composition Software
Harmony Improvisator - Harmony Improvisator is the most advanced harmonic composition tool on the market.
Waveform - Full-featured, cross-platform Digital Audio Workstation built for inspiration and composition
Synfire - The comprehensive Music Prototyping Studio for professionals and enthusiasts.