Philly Naked Bike Ride, Korn, Ukrainian Festival, Welsh Week in this week’s ‘Things to Do’

April 25–28: The Philadelphia Show, “Kill Move Paradise” in N.J. and the Delaware Symphony’s performance of Mahler are among this weekend’s highlights.

April 18–21: Manayunk StrEAT Festival in Philly, The Pine Barons in N.J. and ‘The Flatlanders’ in Delaware are among the weekend’s highlights.

April 11–14: Chef Conference in Philly, Vicki Lawrence in N.J. and “Deathtrap” in Del. are among the weekend highlights.