With a symphony orchestra in tow, you just may have to spring for bigger quarters. But if you're planning to conduct your own orchestra, you'll want better acoustics anyway. Using Symphony Orchestra and GarageBand, there are virtually no limits to the types of sophisticated music you can create.

Taking advantage of the prerecorded Apple Loops (more than 2,000 in Symphony Orchestra), you can compose everything from classical music to movie soundtracks. Or you may want to lend some symphonic power to your pop, rock, or hip-hop arrangements.