Act IV or Act Four may refer to:
* Act IV, music venue
Music of Washington, D.C.
Washington, D.C., has been home to many prominent musicians and is particularly known for the musical genres of Jazz, Rhythm & Blues,
bluegrass, punk rock and its locally-developed descendants hardcore and emo, and a local funk genre called ...
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Act Four (The Seldom Scene album)
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Act IV: Rebirth in Reprise, a 2015 album by the Dear Hunter
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