This rhythm section patiently lets you call only the tunes you want, in your key, and you kick off the tempo. By the way, throw in a multi-instrumentalist arranger who solos on any axe in styles ranging from Django Reinhardt to Joe Henderson and is happy to show you each chorus, in slow motion, transcribed for your particular instrument. Originally conceived as a program that would generate accompaniment for instrumentalists and singers, this software has evolved in large part due to suggestions from end-users. Author Peter Gannon has made excellent use of the Internet to both disseminate and gather intelligence. From the trendiest hip-hop to the most obscure Latin rhythms, there is a style out there to meet your needs.
Users can also design their own styles, and of course, plenty have been uploaded to the Internet.
Playing backgrounds is just part of the story. BIAB can harmonize melodies, or even harmonize your own improvisations in real time. With the Solo Wizard, you don't even need a MIDI input device. The bottom two row of your computer keyboard represent passing notes and chord tones respectively. It's damn hard to hit a wrong note, so if you have the slightest sense of rhythm, you can fulfill your Quincy Jones fantasies.