This DMA portfolio contains materials and a written critical commentary of over 10,000 words relating to the work I have completed towards a Doctor of Musical Arts in Performance, at the University of Salford. My doctoral programme consists of four performance projects and a public performance in the form of a lecture recital. The study consists of an exploration and contextualisation of compositions, written for the virtuoso trombone player in differing genres and an analysis on how these genres have influenced music, written for the brass band trombone soloist in the 21st Century. The work explores historical repertoire that has not been represented either in live performance or by recording in the last one hundred years along with ne...