music!!!!!!!!!!!!

hey does anyone know a good song to download?? i was just sitting here and I need music to download! LoL i can't think of a single song lol! i burned a few cd's and stuff but i have no clue what else to try! Any ideas? I am sure you guys have a couple great ideas! I know practically everyone in the school lives with thier i-pods so lol you guys must know some! let me know!!!