Bloc Party are an English rock band, composed of Kele Okereke (lead vocals, rhythm guitar, keyboards, sampler), Russell Lissack (lead guitar, keyboards), Justin Harris (bass guitar, keyboards, saxophones, backing vocals) and Louise Bartle (drums, percussion). Former members Matt Tong and Gordon Moakes left the band in 2013 and 2015 respectively.
Their brand of music, whilst rooted in rock, retains elements of other genres such as electronica and house music. The band was formed at the 1999 Reading Festival by Okereke and Lissack. They went through a variety of names before settling on Bloc Party in 2003.
Bloc Party got their break by giving BBC Radio 1 DJ Steve Lamacq and Franz Ferdinand's lead singer, Alex Kapranos, a copy of their demo "She's Hearing Voices".