The Crystal Method - Busy Child (1997)

"Busy Child" is a breakbeat single by The Crystal Method from the album Vegas. It is one of the group's most recognizable works, reaching #17 on Hot Dance Club Play charts, and remaining on even ten years later. It is also featured on many film soundtracks and electronic compilations.
The "I guess I didn't know..." in "Busy Child" is sampled from the song "Know the Ledge" by Eric B. & Rakim.

video link
http://www.youtube.com/watch?v=t6twhXA1Gyw