The open mic" a time-honored way for singers to perform, test material, keep vocal chords in shape, socialize with peers and so much more. There are quite a few regular sessions in Manhattan"enough to keep anyone busy indeed. Unlike the informality of a piano bar, the open mic has a formal structure; participants sign up and then give their all in turn.
SOURCE: NiteLifeExchange at 12:22PM on March 2, 2019