Murphy has written several Sloan songs that have been released as singles, including "Underwhelmed" (from the album Smeared), "Coax Me" (from Twice Removed), "G Turns to D" (from One Chord to Another), "She Says What She Means" (from Navy Blues), "The Other Man" (from Pretty Together), and "The Rest of My Life" (from Action Pact).

[2][3] In 2016, Murphy, along with Steven Page (Barenaked Ladies), Moe Berg (The Pursuit of Happiness), and Craig Northey (Odds), formed the group The Trans-Canada Highwaymen; they performed their first show in Niagara in July that year,[4] and toured across Canada in 2017.

[5][6] Their live set consisted of cover songs by member's bands (Sloan, Odds, Pursuit of Happiness, Barenaked Ladies).

[7] In August 2019, it was announced that Murphy had formed a supergroup called Anyway Gang with Sam Roberts and members of Hollerado and Tokyo Police Club.

Murphy and Joel Plaskett collaborated on the production of Prize for Writing, a posthumous album by singer-songwriter Matthew Grimson, which was recorded in 1995 but not commercially released until 2020.