These singers gave impromptu performances. In 2016, Grammy winner Seal was spotted singing "Stand By Me" on the streets of Canada. In 2017, gospel singers gave an impromptu concert at a shelter for ...

Kesha stunned patrons at Martuni's in the Castro District with an unannounced performance of a Patsy Cline classic.

Brad Paisley is getting Jimmy Fallon into the holiday spirit. During an appearance on The Tonight Show on Wednesday, Nov. 12, the country music superstar surprised the crowd with an "impromptu" ...

Hugh Jackman sung the crowd-pleaser Sweet Caroline and even climbed onto the top of the bar counter for the performance.