"Can't Sleep Love" is a song recorded by American a cappella group Pentatonix from their eponymous fourth studio album, Pentatonix (2015). It was released as the lead single from the album via RCA Records on September 4, 2015, and is Pentatonix's first original track. It was written by all members of Pentatonix with Elof Loelv, Kevin Figueiredo, Teddy Peña and William Wells, and was produced by the band. A second version of the song, featuring American musician Tink, was released on September 18, 2015.