compose music from "loops" (drag and drop instruments from the library - a song in ten minutes!)
compose music with real instruments
combine both
record yourself singing, then record yourself singing harmony to yourself!
Listen to "Spy V" (Jason Spivey) in song 1 below: his first song on GarageBand! Clay's first two songs are below it. They all took less than 15 minutes to make!
2. iMovie
edit video to match a song (including any song you create in GarageBand!)
Clay did this one in about 20 minutes, using pictures from iPhoto (in iLife on your MacBook) and a song from GarageBand, edited together in iMovie (you guessed it - also in iLife on your MacBook)
3. Podcasting
recite poems as "radio shows" - podcasts
combine them with images for an impressionistic audio slideshow
National Book Festival Podcasts: from the US Library of Congress. Great applications for the classroom: make your own, or use for lessons.
NPR series that airs music clips, then asks viewers to write descriptions of the musicians voice; also great for "word" learners (thanks to Carolyn Foote)