This thesis comprises a portfolio of thirteen original musical compositions supported by a 30,000 word critical commentary along with videos and sound recordings of a number of the works on CD and DVD. The two operatic works are both set to o~gin<.!-l libretti which are included as appendices. I As the title of the thesis suggests, all of the musical works submitted are linked by a common dramatic voice. The written commentary analyses the processes and influences on those works, with particular emphasis on the theatrical. The focal point of the submission is a large-scale operatic work scored for full symphonic forces and three tenors called Piano Mall. The commentary considers the process of creating this piece and the other works ;in the portfolio are considered within the context of its production. The other works are scored for a variety of forces - from choral works to works for mixed instrumental ensembles. The chapters of the commentary build to create a complete picture of my working methodology and places my work in the context of current music theatre trends. The first forms an introduction to this thesis and sets my work within a wider contemporary context. It also outlines my approach to Shakespeare in adaptation before taking a critical look at modem music theatre and suggesting ways in which my work attempts to take the art form forwards. Chapter Two considers musical and theatrical references in my work and Chapter Three focuses in particular on the influence of Brecht's Epic Theatre. A summary of practical workshops with students from Bradfield College in Reading and Chigwell School in Essex forms the basis of Chapter Four which considers the role of the audience in modem music theatre. And finally, Chapter Five is a detailed analysis of the creation of Piallo Man.