I have presented this topic many times and even written an article about it. GarageBand is part of iLife program on the Mac (Yes, only Apple)
It seems odd that I have been teaching GarageBand for eight years and still people don’t really know how to compose using this program, or some of the compositions are really “bad.” Now with Aviary, an online GarageBand program, the process of composition MUST be addressed in our high school music theory classes to college-level composition classes. I was invited by VanderCook College of Music to conduct a weekend class for educators to learn how to compose using loops. They will also post and comment on each others compositions.
The composition process, using GarageBand, is different from ANY music theory or composition class taught in college. The wisdom of form, instrumentation, and the I, IV, V chords are out the window! Trying to put the “old” methods of composition into a “new” program doesn’t work. If you would like to read more how to compose using loops here is my wiki with powerpoint, pdf’s, and the entire process. Of course, these are my thoughts.
Or, you could join me on October 30/31 at VanderCook College of Music in Chicago. (8-5 on October 30 and 8-1:30 on October 31) I will be teaching, or rather conducting a hands-on workshop for ANYONE that would like to compose. Not limited to music educators. Come and create!