The MIT Logarhythms perform during SGBIS, the Spring Greater Boston Invitational Songfest, on Friday in 10-250. SGBIS featured performances from 11 of MIT’s a cappella groups. Tami Forrester—The Tech May. 9, 2016 Facebook Twitter Reddit Print The MIT Logarhythms perform during SGBIS, the Spring Greater Boston Invitational Songfest, on Friday in 10-250. SGBIS featured performances from 11 of MIT’s a cappella groups. Tami Forrester—The Tech