Here's a look at the concert offerings for Ashkenaz's 40th anniversary celebration:

Thursday: Mickey Hart Band (world beat/Grateful Dead tie-in) and African Showboyz (West African); 8:30 p.m.; $35-$150

Friday: Black Mountain Boys (bluegrass/Grateful Dead) and Wake the Dead (Grateful Dead); 8:30 p.m.; $20-$25

Saturday: West African Highlife Band and Leche de Tigre (Latin/Gypsy/funk); 9 p.m.; $12-$15

Sunday: Octopretzel (family show); 3 p.m.; $4-$6

Sunday: World dance showcase; 7:30 p.m.; $10

March 12: BeauSoleil (Cajun) and Marley's Ghost (bluegrass/folk); 8:30 p.m.; $20-$25

March 13: Balkan Allstars; 8 p.m.; $12

March 14: Everton Blender (reggae) and Abja and the Lions of Kush (reggae); 9 p.m.; $20-$25

March 15: SambaDa (Afro-Brazilian) and Locura (ska/world music); 8:30 p.m.; $15-$18

March 16: Lavay Smith and Her Red Hot Skillet Lickers (swing) and Quinn DeVeaux and the Blue Beat Revue (blues/soul); 8:30 p.m.; $15-$20

March 17: Asheba (family show); 3 p.m.; $4-$6

March 17: Non Stop Bhangra (Punjabi folk music and dance) and Dholrhythms (Indian dance); 6:30 p.m.; free

For more information, go to www.ashkenaz.com.

Follow Jim Harrington at http://twitter.com/jimthecritic.