Robertson was a member of Vancouver-based Celtic punk band The Real McKenzies from 1993 to 2013, appearing on their first seven full-length studio albums.

In Vancouver, Robertson played with the groups Curious George and Stick Monkey.

[1] Curious George released the album Children of a Common Mother in 1989 on the Nemesis Records imprint.

[2] In 1993, Robertson joined The Real McKenzies, initially as a guest member to replace guitarist Tony Walker for a single gig.

He was only able to perform on select tours, however, due to his familial obligations and health problems.