A New Brain

The Green Valley Theatre Company does an outstanding job with this small but hilarious musical from William Finn and James Lapine. A composer (Craig Howard) suffers a brain injury that brings on hallucinations and must undergo a risky surgery to recover. The hallucinations are a riot, including a frog with a bad attitude (Owen Smith) and nurses singing songs like “Poor, Unsuccessful and Fat.” With excellent supporting work from a very talented cast, energetic direction by Jerry Kennedy and a live orchestra directed by Peter Kagstrom, this is a wild ride. F, Sa 8pm; Su 7pm. Through 5/18. $18. Green Valley Theatre Company, 3823 V St.; (916) 736-2664; www.greenvalleytheatre.com.