For a cappella singing at its funniest don’t miss Slap Happy 2011. Mark Arand, Gabe Harshman, Cameron Gray and Matt Bell (with special appearance by Casey Fate), return to Whidbey Children’s Theater in a benefit for the theater at 7:30 p.m. Aug. 12, 13 and 14. Tickets are $12 for adults, $10 for seniors and $8 for students, and can be purchased in advance by calling 221-2282.

Their all-new program is family-friendly and promises to be filled with harmonies and Slap Happy humor. Uptown Four of Tacoma will be joining them on both Friday and Saturday night.