an extended cut of a song that is repeated; typically only the instrumental section of said song if the entire song is not so. homework edit description comes from the practice of listening to the same repeated enjoyed tune while doing something like homework. homework edit songs are typically soothing, non distracting, and easy to listen to for said purpose.
james: have you heard nujabes' aruarian dance?
mike: have you heard the homework edit of it?
james: the hell's that?
mike: read up here mutha fucka urbandictionary dot com/define.php?term=Homework%20edit