Best way to go about creating playlists system?

I'm setting up a site for a radio station which keeps logs of all the songs it plays daily. This comes to hundreds per day, and the info I need to store is pretty lightweight: artist, datetime, title, and DJ on the air at the time (if any). The book I'm reading about this says that comments, for example, aren't full-fledged nodes for performance reasons, and I think my application falls into a similar realm, so I haven't started creating a node type to do this.

Any suggestions for where to start?