MIDI music has been a versatile addition to our house. We use this mostly in ministry, and it enables us musically to be limited only by our imagination. Our system incorporates a PowerBook, a KORG Audio Gallery, software (Master Tracks Pro, Music Time, and Band-in-a-Box), and a Bose Acoustic Wave Music System.
Some time ago along with the purchase of a new Mac Powerbook we also obtained Logic Express, a complete recording studio in the computer. I have had some fun with that recording and playing trumpet trios, quartets, and quintets. Hopefully I can also record some vocal ensembles. It has many possibilities!