In 2013, Colleen was featured on a song called "Drop the Poptart" on Canadian producer deadmau5's SoundCloud. She was also the featured vocalist on "Seeya", the second single from deadmau5's Grammy- and Juno-nominated studio album "while(1&lt;2)". "Seeya" has since gone platinum in Canada, after Colleen and deadmau5 performed the song on the 2015 Juno Awards on March 15, 2015 in Hamilton, Ontario, Canada.