Thesaurus Rex is a Brooklyn based indie rock band/conceptual performance experiment. The group was started in 2021 by writer/singer/improv-comic Calvin Rezen with the help of Berklee classmate, Varun JhunJhunwalla on lead guitar, audio engineer and session drummer Dan MacDonald, and jazz virtuoso Ethan Marsh on the bass. They've been growing a loyal organic following in NYC over the last years and have played alongside bands like Schur, Spilly Cave, Henry Hall, Boys go to Jupiter, and Um, Jennifer at such venues as Brooklyn Made, The Sultan Room, Our Wicked Lady, Rockwood Music Hall, Mercury Lounge and many more. As of February 10th 2024 they have Advanced to Round 2 of Our Wicked Lady's annual 'Winter Madness' battle of the bands.