I’m thinking even beloved anthem singers’ primary function is to build atmosphere, not to sing well. They usually send me scrambling for the mute button. (Most of my exposure to such things comes from hockey.)
Consider the late Paul Lorieau (SSB starts around the 4 minute mark), who did this for 30 years:
Or the soon-to-retire Rene Rancourt, who’s very charismatic but not exactly Pavarotti:
Some consider Lyndon Slewidge one of the very best, maybe because he doesn’t try to pretend national anthems are anything other than military marches:
