Once you've recorded the basic tracks, you lay them out in the sound editor and manipulate the different tracks to achieve the ideal sound. There's a huge library of effects and samples you can deploy, too. You can record to separate tracks, or multiple tracks at the same time. You can see traditional musical notation on the screen if you want to compose, or you can play instruments through a MIDI interface and see the resulting notes in real time (really cool!). Logic Pro 9 starts with the writing and recording component. Logic Pro 9 installs easily and the interfaces are all Apple-quality, meaning easy to use and understand. This is not a cheap package, but you get a lot of power built in. Logic Pro 9 is the latest version of Apple's music recording, editing, and mixing suite.