An undergraduate degree or diploma in music performance, or its equivalent, from a university recognized by McGill. A cumulative grade point average (CGPA) of at least 3.0 out of a possible 4.0, or a grade point average (GPA) of 3.2 out of 4.0 in your last two years of full-time studies.

https://www.mcgill.ca/music/programs/mmus-opera-voice/admissions/apply
Transcripts
Two letters of recommendation
Personal statement
Curriculum Vitae (CV)
Your supervisor or teacher preference (optional).
Proof of English language proficiency
A list of repertoire
All classical voice types
Recorded video audition