He grew up in Toronto, where he and Charlie Angus founded the Toronto punk band L'Étranger. In the late 1990s he wrote for the Toronto weekly Now.
When L'Étranger broke up in 1986, Cash signed to Island Records as a solo artist. His first release on the label was a reissue of L'Étranger's last recording, Sticks and Stones. He released three albums as a solo artist and had a number of hits, including "Time and Place", "Boomtown", "What Am I Gonna Do with These Hands" and "A Lot of Talk". In 1993, his album Hi was recorded at Metalworks Studios in Mississauga, Ontario.
He then formed the band Ursula, who released the album Happy to be Outraged in 1995. However, that band was not successful, and broke up after just the one album.
Around the same time as Ursula's demise, however, his brother Peter Cash also decided to leave his band, Skydiggers. Both available at the same time for the first time in their careers, Andrew and Peter decided to write and record together, and released their debut album as The Cash Brothers, Raceway, in 1999.
Since 1999 Cash provided the soundtrack music for various television shows, mostly Canadian. He also wrote for the Toronto-based Now magazine. In 2000 he collaborated with Hawksley Workman and Jason Collett on Chrome Reflection, an album credited to Bird. In 2007 Cash released his latest solo album Murder=.
On October 5, 2009, Cash was nominated as the New Democratic Party candidate for the Toronto-area Davenport electoral district, in preparation for the 41st Canadian general election. At the time, the House of Commons was governed by a minority government, led by Prime Minister Stephen Harper, that could fall at any time; in this unpredictable election situation Cash was a candidate for over a year and half.
When the election was called, on March 26, 2011, his main campaign issue was that Davenport's incumbent MP, Mario Silva, was not a "full-time" MP. Cash campaigned with two main slogans, "Cash for Toronto" and "Trade your Silva for Cash", with a focus on "issues of precarious employment, especially with regards to freelancers and people who are working serial contracts." Near the end of April, both The Toronto Star and The Globe and Mail newspapers started to predict that Cash might win, ending 49 years of continuous Liberal party representation for that electoral district. On May 2, he defeated Silva, becoming a caucus colleague of his former bandmate Charlie Angus, also a Member of Parliament for Timmins—James Bay since 2004.
Andrew Cash lost his seat in the general election held October 19, 2015, one of many New Democrats who were swept away when the Liberal party came from third place to form a majority government.Time and Place (1988)
Happy to Be Outraged (1995, credited to Ursula)
Chrome Reflection (2000, credited to Bird)