The phrase references the act of acquiring, without cost, a specific music software known as Band-in-a-Box. This software is designed for automatic accompaniment and music composition. An instance of its use would be a musician seeking to obtain the software to create backing tracks without paying for it.
The appeal of such an acquisition stems from the software’s utility in music creation and arrangement. The availability of the software, particularly without monetary exchange, can significantly lower the barrier to entry for aspiring musicians, students, and hobbyists. Historically, software piracy has been driven by a desire to access otherwise expensive resources and by a belief in the free exchange of information.