The House Jacks is a professional a cappella quintet from San Francisco, founded in 1991 by Deke Sharon.

[2] The House Jacks describe themselves as a "rock band without instruments",[3] their live shows typically include not only singing but also vocally imitating instruments such as trumpets, guitars, harmonicas and strings[4] as well as taking audience-requests for songs and rendering them in musical styles unlike the original versions.

They can be heard in the background music on NBC's The Sing-Off in the opening video, commercial transitions and elimination sequences.

[11] Rolling Stone wrote about their inclusion in Ford automobiles, demoing the twelve speaker Sony sound system [12] Their version of "Since U Been Gone" was adapted for the audition scene in Pitch Perfect (Deke Sharon was on site music director, arranger and vocal producer for the film, as well as "Male Voice #1") The original group of seven members met while singing in collegiate groups on the East Coast (Tufts Beelzebubs, Brown Jabberwocks, UNC Clef Hangers, The Dartmouth Aires) and relocated to San Francisco to begin the group in September 1991.

[13] Past members include Kid Beyond, Rob Penn, Garth Kravits, Bert Bacco, Wes Carroll, and Antonio Medrano.