Originally on drums, by 1966 Gregorash was organist and lead singer for the group which, from 1968, would record five singles for the local Franklin label, with two albums released.

[1] In 1969 Gregorash left the Mongrels and after fronting the group Walrus - not connected with the like-named UK progrock outfit - signed as a solo act with Polydor Records.

Subsequent to two single releases in the autumn of 1970, Gregorash appeared at the notorious Niverville Pop Festival, leading the crowd in the FISH chant from Woodstock.

"Down by the River" would be the only release by Gregorash to attract US attention, reaching #118 on the Singles Chart 101-150 ranked in Record World.

As a result of being played by one radio disc jockey in Winnipeg, "Together" eventually accrued sufficient interest for release on Attic Records as "Together (The New Wedding Song)"; it reached the Canadian Top Ten in the summer of 1987.