Merriweather Post Pavilion kicks off its 2012 season with its annual Sweetlife Food and Music Festival, sponsored by delicious local salad chain Sweetgreen and headlined by Swedish electronic whippersnapper AVICII, rapper Kid Cudi and indie darlings The Shins. Also on the bill: Fun., Zola Jesus, Ben Browning of Cut Copy and local band BLUEBRAIN offering a DJ set. Local farmers will also offer hearty, organic grub at this "carbon neutral event." Tomorrow, Saturday, April 28. Gates open at noon. Merriweather Post Pavilion, 10475 Little Patuxent Parkway, Columbia, Md. Tickets are $75 to $125. Call 800-551-SEAT or visit merriweathermusic.com.