I just installed Logic Express 9 for Mac (Lion), and am quite confused, even after reading the "documentation" (?) that comes with the program. I want to do a simple thing: I have a two track General MIDI file of a piano. I want to import that file into Logic Express and play it back with different Logic Express pianos. All the documentation/tutorials I saw seems to involve so much more complicated stuff that I can't figure out how to do this very basic thing. I tried two approaches. (1) I created an "Empty Project" and imported the .midi file. I got two tracks in the Arrange pane that say "EXS Grand Piano". I could not figure out how to get a different grand piano though. (2) I created a new project using "Software Instruments" template. Then I got a column of about 15 different instruments in the arrange menu. One of these was "Yamaha Piano Hall", an instrument which did not show up on the "Library" tab in the earlier project. I tried to assign both tracks to "Yamaha Piano Hall", but when I did, I could not individually mute either track. Either they both were muted or neither were muted. Can someone help explain: (a) What is the best piano sound that comes with Logic Express? (b) Where is it located, and how do I configure a two-track MIDI file to play using that piano sound? (c) Does anyone know why it could be apparently impossible to play only one track - i.e. muting one track mutes the other, and unmuting the track unmutes the other? (d) What are "EXS Grand Piano", "Yamaha Piano Hall" and all the other software instruments versus libraries versus MIDI? (e) Is any of this documented anywhere?