Happy Mondays are an English rock band formed in Salford in 1980. The original line-up consisted of brothers Shaun Ryder (vocals) and Paul Ryder (bass), Gaz Whelan (drums), Paul Davis (keyboard), and Mark Day (guitar). Mark "Bez" Berry later joined the band onstage as a dancer and maracas player. Rowetta began working with the band as guest second vocalist in 1990. They were originally signed to Tony Wilson's Factory Records label.

The group's work bridged the Manchester alternative rock music of the 1980s and the emerging UK rave scene, drawing influence from funk, house, and psychedelia to pioneer the Madchester sound. They experienced their commercial peak with the releases Bummed (1988), Madchester Rave On (1989), and Pills 'n' Thrills and Bellyaches (1990), with the latter going platinum in the UK. Happy Mondays disbanded in 1993, but have since reformed several times and released the reunion album Uncle Dysfunktional (2007).