Schools that I would recommend taking violin and or vocal lessons from in Winnipeg, MB are:

Manitoba Registered Music Teachers Association
Groove Academy – School of Music
Tauber Music
University of Manitoba

I would also recommend, for violin, trying to get into contact with some of the players in the WSO, (Winnipeg Symphony Orchestra).
It’s always helpful to know that whoever you take lessons with, that the instructor/school is involving their students in regular recitals/festivals, and that they are actively involved in the music business as teachers and performers.