B-Side is a hidden speakeasy-style karaoke venue located inside Hotel Revival in Baltimore. It offers a cozy, intimate atmosphere with private soundproof rooms that create a true speakeasy vibe. The venue is known for its creative cocktails, attentive staff, and unique entrance via a coin-operated jukebox. While the song selection is decent, some reviews mention technical issues, but overall, it provides a memorable, stylish experience perfect for private celebrations and date nights.