Fine, I'll do it myself

I’m making a big extended version of one of my favourite songs on GarageBand. How hard can it be to do?

So far it’s a little tough. My challenge is cutting the parts of the songs I want accurately and having them play without sounding like a splice. There’s also the question of stacking layers and recording the whole thing. That’s it. I reckon I can finish this tonight, but I’ve got to sleep now.