Paul Simon took to the Democratic National Convention stage last night to perform his hit "Bridge Over Troubled Water."

A lot of fans were quick to point out that the singer's performance was, well, troubled.

Some, however, defended Simon, noting his age.

Comedian Sarah Silverman and Senator Al Franken introduced Simon.

Franken noted that because he was a Clinton backer and Silverman was with Sanders, they were forming a bridge.

"We're like a bridge over troubled water," Franken said before calling Simon to the stage.

The Associated Press contributed to this report.