Marissa Lorusso

"Must Be Nice," the first single from Chicago band Varsity's forthcoming album Parallel Person, has a title that comprises a double meaning. The title phrase is habitually "bandied around sarcastically," says singer and keyboardist Stephanie Smith. But she says it can also be an ultimatum, as in: "I must be nice in order to be liked/noticed/not be considered a b****."

Updated at 9:40 p.m. ET

Like U2, Ed Sheeran has also canceled his concert in St. Louis because of safety concerns.

The cancellations follow protests in the city prompted by the acquittal of a former police officer, who had been charged with first-degree murder in the fatal shooting of a black man.