Uncle Bonsai comes to Bainbridge Island for a one-night-only performance at 8 p.m. Saturday, April 25 at Bainbridge Performing Arts.

Imagine what might happen if Tim Burton hijacked the Andrew’s Sisters en route to a Stephen Sondheim festival with The Beatles and Tom Lehrer in the sidecar; you’d get Seattle super-harmonizers Uncle Bonsai.

With just three voices and an acoustic guitar, Uncle Bonsai presents an often dizzying vocal array of intricate harmony. Their songs, dark and hilarious at times, just as often delight with moments of great insight and beauty.

At the April 25 concert, Uncle Bonsai will present two thematic one-acts, “Brand New World” and “The Family Feast,” featuring new songs, old songs, and songs from the upcoming release: “The Family Feast: The Study of the Human Condition, First World Problems, and the Lasting Physiological and Psychological Effects of Eating Our Young.”

Tickets are $20 per person at www.bainbridgeperformingarts.org or 206-842-8569, or in person at BPA, 200 Madison Ave. North.