Band-in-a-Box Musical software is a music accompaniment software package that allows a
user to create songs by simple keyboard inputs: a musical style, a tempo, and a key. The
user types in a series of chords, even complex ones, and the software generates a song,
typically played by four or five musical instruments. The software can create backgrounds
for almost any chord progressions used in and can play them in any of thousands of 
different music styles. The software intelligently retrieves and customizes groups of
measures that are appropriate for soloing over a particular chord at a selected key and 
tempo.