I just upgraded to Logic Express from Garage Band... I want to use Logic as a composition tool. I'm wondering if there are good sources of drum loops, so I can get additional variety beyond the Jam Packs that come with Logic. I understand that the most satisfying results are possible when programming your own drums. However, good results probably require some understanding of drumming. It's not only that I can't play drums, I don't think like a drummer so my drum programming would be horrible. I don't want to spend a year getting my drum tracks together. These are just scratch tracks anyway. I want building blocks to compose with. I hope this makes sense. Any recommendations for a source of drum loops? Genres would be rock, hard rock, heavy metal, progressive rock. I would also appreciate suggestions for jazz drums, and any other non-specific recommendations. Also, if it matters... I upgraded to Logic so that I could mix time signatures and change tempos within a composition (the prog rock aspect). Ideally, I'd like to find loops that can work in different time signatures (is that even possible?) Thanks!