Best known as a former member of the Irish American celtic rock/punk group Black 47, Andrew is sometimes credited in his collaborations as "Goodsite". Among his main collaborations as sessionman, he worked with Jeff Buckley, Bush, Black Eyed Peas, Mazzy Star, Tricky and Muggs from Cypress Hill, The Jive Five. He works as a producer too and runs his own project in NYC, a band called Musichead.