He performed his last regular season anthem on April 8 , 2018 after 42 years .
Rancourt has sung the U.S. and Canadian national anthems at the National Hockey League 's Boston Bruins home hockey games for over 40 years .
Rancourt performed Rancourt 's last regular season anthem on April 8 , 2018 after 42 years .
Rancourt has sung the U.S. and Canadian national anthems at the National Hockey League 's Boston Bruins home hockey games for over 40 years .