At Union Hall, *Mary Beth Does an Hour (early show)* presents a live rock/pop set built around the structure of a tight, time-bounded performance. Mary Beth appears alongside the late-show counterpart, with the early slot offering its own pacing and room to hear the material in closer detail. The event sits in Brooklyn’s long-running tradition of small-room concerts where songwriting and stagecraft are tested in real time. Its value is practical rather than mythic: a working snapshot of how contemporary pop performance takes shape on a local stage.