Saturday, March 20
Enjoy the holiday in true Irish style with fiddler Frankie Gavin, harpist and singer Maeve Gilchrist, and other surprise musicians. Brian O'Donovan (right), host of the weekly Celtic Sojourn program on WGBH, will act as emcee.
8 p.m. $25-45. Sanders Theatre, 45 Quincy St., Cambridge. 617-496-2222 ofa.fas.harvard.edu