I bought an Axiom 61 pro controller for doing instrument recording in Logic. I started off testing it in Garage Band recording multiple tracks and instruments and it worked fine. Wanting more instruments, I fired up Logic (which I don't know very well yet) and put down a track using the Steinway Grand. I then started recording a second track using a bass guitar and it was OK for about 3 seconds and then started lagging and then eventually stopped taking input. Why would I be just fine in GB and not Logic? This is a Unibody core i7 MacbookPro with 4GB RAM (max I think). I can't for the life of me understand why I can't record more than 1 track in Logic but I can just keep recording and recording in GB.