The City Muffins Boys were a local Toronto band - the picture below is taken from 1967. There's little info or tracks available of the band, aside from a poor quality video shot by the CBC (linked below under picture). They opened for the Doors when they played in Toronto (1968-04-20) which the Toronto Star called "the greatest pop-rock non-event of the year" and they also played at the Syrinx Benefit concert at St. Lawrence Market.
City Muffin Boys filmed by the CBC.
Quotes from the Toronto Star 1968-04-22.