Quick answer: Liquid Notes is a songwriting assistant software that enables deep modification of chords and chord progressions for all styles, rather than being a semi-automatic accompaniment generator. Read more below.
How Liquid Notes differs from Band in a BoxBand-in-a-Box automatically generates complete arrangements or “songs” (usually comprised of piano, bass, drums, guitar, and strings or horns), and playback based on the manual input of standard chord symbols as well as the user’s choice from a selection of built in musical styles. Songs can be exported as either a MIDI or audio file. Exporting to a MIDI file allows the user to edit the music generated by Band-in-a-Box in a DAW or MIDI sequencer.
The application became most notably known as a semi-automatic accompaniment generator for improvising musicians.
Unlike Liquid Notes, Band-in-a-Box doesn’t take into consideration the user’s personal style but bases its output on pre-established databases of style patterns particular to popular musical styles. The software works in standalone mode exclusively and doesn’t provide routing options making possible the direct connection to standard DAWs.