Band-in-a-Box is a MIDI music arranger software package for Windows and Mac OS produced by PG Music Incorporated.
The software allows a solo musician to play along to a computer-generated accompaniment with adjustable tempo, adjustable key, and a choice of musical styles. Original accompaniment with custom chord progressions and melody lines can also be created. Band-in-a-Box basically provides a 'back-up band' for a musician to play along with. It can also be used to simulate an entire band with or without soloists.
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