Legendary musician Jill Sobule has tragically passed away in a Minneapolis house fire at the age of 66—just one day before she was scheduled to perform in her hometown of Denver.

Jill Sobule, who was in between performing live shows, died in a Minnesota house fire May 1, according to her representatives.

Fire officials in Woodbury on Friday were still trying to determine how and why Jill Sobule, the award-winning singer-songwriter and human rights activist, died in a house fire in Woodbury early Thursday. Firefighters were called to the 9200 block of Pinehurst Road, near Interlachen Parkway, around 5:30 a.m. after receiving a report of a fire.