Zoetic Stage’s ‘Assassins,’ the Carbonell Award-winning company’s first musical, proves as accomplished as the company’s earlier productions of dramas and dark comedies. Nicholas Richberg delivers a powerful, period-style performance as John Wilkes Booth, the earliest in a misfit group of sucessful and would-be presidential assassins. The show unfolds in the Carnival Studio Theater at the Arsht Center’s Ziff Ballet Opera House, 1300 Biscayne Blvd., Miami, through Feb. 23. Performances are 7:30 p.m. Wednesday-Saturday, 4 p.m. Sunday. Tickets are $45. Call 305-949-6722 or visit www.arshtcenter.org.