Closs is best known for his song "Erica", a Canadian Top 40 hit in 1994 as well as his guitar arrangement of "O Canada" played as the daystarter on CBC Northern Ontario Radio. He has also toured as a supporting musician in Charlie Major's band. He won Northern Lights Festival Boréal's Jackie Washington Award in 2002 and the Mayor's Celebration of the Arts Award for Lifetime Achievement in the Arts in 2016.
Closs teaches songwriting workshops in schools across Northern Ontario through "Learning Through the Arts" and through invitations from Arts organizations. He has performed in Theatre and Film productions as both actor and musician.