He has been a member of indie rock bands The Carnations, All Systems Go!, Small Sins, Another Blue Door, The I-Spies, BROS., k-os, Tommy Hawkins and Major Maker,[1] among others.
The Carnations wrote and performed the theme song for the MuchMusic show So 90's, and were CFNY 102.1 new rock search finalists.
Throughout the years, D'Arcy has been commissioned to create music for Canadian advertising campaigns, including for Telus, The Home Depot, Triscuits, Dodge, Bell Canada, Scotiabank, Coca-Cola, Honda, Quaker, Alesse, Walmart, Tetley, Hyundai, Toyota, Sunchips, McDonald's and EOS.
'[3] D'Arcy also wrote and performed the theme song for the CBC children's show 'Ollie: The Boy Who Became What He Ate.'
In 2016, D'Arcy self-recorded, wrote and produced a six song collaboration with Hawksley Workman under the name Tommy Hawkins called 'Amy.