The Canadian Tenors donned safety vests and steel-toed boots on Thursday to sing for construction crews building the Canadian Museum for Human Rights in Winnipeg.
As workers put down their tools and looked on, the group sang two songs inside the museum, which has been under construction since the spring of 2009.
The Canadian Tenors were in Winnipeg to sing the national anthem at Wednesday night's National Basketball Association game between the Minnesota Timberwolves and the Detroit Pistons at the MTS Centre.
Members said while in town, they wanted to get a glimpse of the human rights museum.
The museum is currently slated to open in 2014, about a year later than originally planned.
Click on the video player above to watch Alana Cole's report.