"Sleepyhead" is the debut single from American electronic band Passion Pit, featured on their first EP, Chunk of Change, and later on their debut album Manners.

When the song had been re-released on Manners, it had an updated sound.

[1] The music video showcases a series of images with clapping hands, instruments and Michael Angeakos singing, all together it mimickes the animation style of a zoetrope.

The song contains samples of "Óró Mo Bháidín" by Mary O'Hara and "San Francisco Scene (The Beat Generation)" by Jack Kerouac ("and everything is going to the beat").

[2] In the announcement trailer for the puzzle-platform game LittleBigPlanet 2, the instrumental of the Chunk of Change version of the song had been used.