Locating Garage Band and Logic Pro song data on MacBook Pro

I've successfully copied the macuser folder to a hard drive. I'm trying to get all of Garage Band projects and their data to a macBook Pro. I also am trying to get Logic Pro and all of it's data (my songs) copied over too. Where do I my my song data for both of these apps? I don't want to lose my work. Please help, aid and advise.

[Re-Titled by Moderator]

Original Title: MacUser