Amsterdam

He formed Amsterdam in 1999 with cousin Johnny Barlow and former Blow Monkeys drummer Tony Kiley but didn't secure a record deal until September 2004 when the band were signed to new label Beat Crazy. During this time Amsterdam struck up a friendship with Elvis Costello who used Amsterdam as his backing band on the Jonathan Ross television show as well as opening act on several occasions. The relationship was blessed on record when Prowse performed a duet with Costello on a cover of The Searchers 1964 hit 'Don't throw your love away' for the Liverpool Number Ones Project on EMI Records in 2008.

The band's first single for Beat Crazy was a UK top 40 single with 'The Journey' in February 2005. Follow up single 'Does this train stop on Merseyside' also hit the UK Charts. The song regularly elicited an emotional response from Radio 1 DJ John Peel. Peel's widow Sheila Ravenscroft went on the station after the DJ's death and confirmed that 'He was not capable of playing it without crying'.

The band left Beat Crazy by mutual consent in 2006 and signed to The Stranglers management company CIA Recordings. The subsequent Amsterdam album Arm in Arm was voted 14th best album of all time out of Liverpool by the readers of Liverpool.com in Dec 2008. Christy Moore also released his version of "Does This Train Stop on Merseyside?" on Sony Records album Listen on April 17, 2009.

Amsterdam also appeared on the compilation album Mersey Boys and Liverpool Girls with their song "And It Hurts"