This dissertation consists of three solo recitals and one lecture recital. The repertoire of all programs is composed of music written specifically for the trombone plus two transcriptions of works for voice. The purpose of this paper is to investigate the use of selected vocal pedagogical material as a means of developing musicianship for the trombonist. The historical relationship of the voice and the trombone is traced through written documentation and musical composition. Similarities between the development of legato technique for the vocal student and the trombonist are examined. A brief history of the vocalise and its pedagogical function is presented. The development of expressive musical performance for the trombonist is explored through the use of examples from three different vocalises of Marco Bordogni.