Music is cool man... Floyd (early floyd), Dead, MMW, whatever your into but it really depends on what you are going to be doing though. I like to wander around on acid. Go on a hike, walk around downtown (if your in a big city). One of my favorite things I used to do on acid was camping/hiking or going to amusment parks. Whatever you end up doing it will be a guaranteed adventure. Acid has a way of making anytihing exciting.