Since its inception, the American Broadway industry has flourished and grown to include numerous vocal styles and techniques. The early twenty-first century has seen a rapid increase in demand for collegiate courses and instructors pertaining to music theater. It has therefore become necessary for voice instructors to be equally comfortable teaching both music theater and classical techniques such as bel canto. This document serves as a resource for instructors seeking more information on defining and teaching vocal styles in music theater including legit, mix, and belt. The first two chapters address the following three questions: 1) What is bel canto and how does the technique function? 2) What is music theater as a vocal style and how do colloquial terms such as legit, mix and belt function within music theater? 3) Are the technical ideas behind bel canto and music theater really that different? The third chapter offers a curriculum for a semester-long course (a hybrid between a song literature class and a performance-based seminar) called Singing Music Theater Styles: From Hammerstein to Hamilton. This course shows the rich development tracing techniques of bel canto through techniques used in contemporary music theater. This document concludes with an annotated bibliography of major sources useful to both the instructors wishing to teach this course and the performers looking to expand their knowledge of singing music theater.