Friday (26th) – ifest, a contemporary Irish festival, opens for a three-day event at the Seaport World Trade Center, Boston. 6-11 p.m. on Friday; 11 a.m.-4 p.m. and 6-11p.m. on Saturday; and 12 p.m.-5 p.m. on Sunday. See ifestboston.com

Saturday (27th) – Please join the class of 1974 of Dorchester High as they celebrate a 40th Reunion to be held at the Quincy Marriott. Please email DotHigh74@gmail.com for more information.

Sunday (28th) – Ester hosts “Tapas and Toe-tapping” The restaurant ester in Lower Mills will host the delicious sound of musical talent on Sunday, Sept. 28 — along with with an ensemble of Tapas dishes— as part of ArtWeek Boston. The “Tapas and Toe-Tapping” event will take place from 2-4 p.m. in partnership with the Conservatory Lab Charter School which recently moved its grades 2-8 only a few doors down from ester on Dorchester Avenue. Many of the school’s top musical talents will be performing a musical medley, covering a wide range of rhythms and melodies in tune with an assortment of delicious Tapas dishes from ester Executive Chef, Esteban Gallego. Tickets are only $15 and may be purchased at the door or online at: http://www.eventbrite.com/e/tapas-toe-tapping-music-tickets-12413349663

• Fiddlehead Theatre Company, the resident company of the historic Strand Theatre, presents Unexpected Cabaret, a one-of-a-kind musical review during ArtWeek Boston. 2-4 p.m. This lively review teams students, teachers, friends, and community members with professional cast and crew from Fiddlehead’s upcoming production of Elton John and Tim Rice’s AIDA, running Oct. 17-26, 2014 at the Strand. Free, open to the public.

• Ashmont Hill Chamber Music’s final 2014 concert, featuring Trinidadian soprano Jeanine De Bique, will be held at 3 p.m. St. Mary’s Episcopal Church, 14 Cushing Ave. in Dorchester. Call 617-680-7542 or visit ahchambermusic.org.

Tuesday (30th) – Community blood drive at Florian Hall, 55 Hallet St., Dorchester 9 a.m.-3 p.m. For appointment, 617-733-2767.

Thursday, (October 2nd) – Boston Spay/Neuter Day for Cats, 9 a.m. - 4 p.m. at the United House of Prayer for All People, 206 Seaver St., Dorchester. Appointments and pre-payment are required. Call 617-226-5685. Sponsored by the Massachusetts Animal Coalition License Plate Fund.