 Moving to Canada in 1999, O'Shea was based at Toronto's Umbrella Sound.He worked on albums by Tegan and Sara ("This Business of Art"), Feist ("Open Season"), By Divine Right ("Good Morning Beautiful"), Sarah Slean ("Night Bugs"), Starling ("Stuff You Should Have Said Before") Elliott Brood ("Ambassador"), The Flashing Lights ("Sweet Release") and Rascalz ("Reloaded").O'Shea also received critical praise for producing the mini-album by Toronto alt-rockers Hotel (My Demon Brother).