While at college La Croix was part of The Four Winds vocal quartet with fellow student
Gordon Lightfoot. He was a founding member of the folk band The Colonials, with
Denny Doherty and Richard Byrne. Guitarist
Zal Yanovsky was hired to accompany the group for the "Hootenanny USA" tour in late 1963, which included a performance at Carnegie Hall. Earlier that year the band had been renamed
The Halifax III. This group recorded two LP albums for Epic records in New York and performed on several national television show in Canada and the US, including
Sing Along With Mitch and
The Merv Griffin Show. In 1965, LaCroix began his commercial photographic career, and musically returned to his first love, singing Jazz. LaCroix has received more the 60 awards for his photography and in 2008 was awarded The Lifetime Achievement award by the Canadian Association of Photographers and Illustrators in Communication. In 2017, LaCroix and Ted O'Reilly published
Toronto Jazz Treasures, a coffee table book of photographic portraits of 100 of Toronto's best-known jazz musicians. ==Personal life==