LFO (standing for *Low Frequency O**scillation) was formed in 1988 in Leeds, West Yorkshire, United Kingdom by Mark Bell (1988-2014), Gez Varley (1988-96) & Martin Williams (1988-90) and was active until 2014.

Gez & Mark originally met whilst part of rival breakdancing crews in the Merrion shopping centre in Leeds in 1984. They then met again whilst at college studying photography and graphic design in 1988 and formed LFO.

LFO, named after the Low Frequency Oscillator component of synthesizers, were pioneers of the Bleep Techno sound in the UK at the end of the Eighties and are best known for the early self-titled techno anthem “LFO”.

Their last release as a duo was the album Advance in 1996. In 2003 Mark Bell resumed use of the name as a solo pseudonym.

Mark Bell died in October 2014 from complications after an operation.