McCann's creative involvement in music began after a promising basketball career was cut short by a shoulder injury. Growing up, McCann cites Jungle and Hip Hop as his main influences. He received his first public attention when, his first track, Bassbins recorded under the pseudonym Quiet Storm, was picked up by BBC Radio 1Xtra's DJ Da Flex.
McCann has started his own label, which focuses on dubstep and grime artists. Storming Productions was founded in 2004 and then he joined Stingray Records in 2006. Around this time, he also began his own radio show on Rinse FM. McCann also created an additional label Dub Police to focus specifically on Dubstep. Dub Police is composed of Rusko, L-Wiz, N-Type, The Others and more.
He has performed at a number of high-profile UK music festivals, including Glastonbury and Global Gathering and his release Back for the First Time has received widespread public attention, being playlisted on BBC Radio 1. He has also performed at many other notable festivals around the world such as Exit Festival in Serbia, Stereosonic in Australia and Lollapalooza in the U.S. Despite his widespread success, McCann still finds time to perform every two months at the renowned Fabric in his hometown of London.
His debut album Everybody's Talking, Nobody's Listening (album) was released on 4 May 2009 on Caspa's own label Sub Soldiers/Fabric Records and included an appearance from legendary reggae figure Sir David 'Ram Jam' Rodigan.
In August 2012, it was announced that Caspa and various notable electronic music producers would be featured on the Halo 4 remix album.
"War" featuring Keith Flint was used in the trailer for Kick-Ass 2.
In 2014, McCann moved to Denver, Colorado, USA. He cites Denver's music culture and friendly people as influential factors, although he is unsure whether the move will be permanent.
