Joseph Zellnik is best known as the composer of the off-Broadway hit Yank! (written with his brother, David Zellnik), which received seven Drama Desk nominations, including for Best Musical and Best Score, and Best Musical nominations from the Outer Critics Circle and the Lucille Lortel Foundation. The show has since gone on to productions across the U.S. and around the world, including in Rio de Janeiro, where it won the 2017 CENYM award for Best Musical. His other musicals, also with David Zellnik, include First in Flight: The Wright Brothers, which toured the country for TheaterWorksUSA, and City of Dreams, presented in New York and at the first International Festival of Music Theatre in Cardiff. Joseph has also published The Sound of Murder: Musicals Are Murder #1, the first in a new Broadway-themed mystery series, and The Vaudeville Murders, which he coauthored with Miriam Zellnik.