In a look ahead at a week of Cambridge and Somerville events, there’s a free pi day pie potluck, comedy against cancer, Mobius performance art called “Slay,” Ukrainian folk-rock, a St. Patrick’s fun ...

Did you know Boston has a theme song for the FIFA World Cup? It was composed by students at Berklee College of Music.

Capital City Concerts presents “Her Favorite Things,” on Sunday, March 30, at 3 p.m. at the Unitarian Church of Montpelier.