The portfolio compositions examine the effects of using differing textures and colour within original musical concepts. The portfolio includes the results of research into methods of composition using two forms of the brass family - a reduced combination (Quintet) and the standard brass band configuration. The use of a combination of keyboard with solo brass, a combination of wind instruments with a solo wind instrument, and a combination of an orchestra with choir (SATB) is as a result of developing compositional techniques in hitherto unfamiliar areas. The works also attempt to reflect the influences of a number of recognised composers - Ralph Vaughan Williams, Frederick Delius, John Ireland, John Rutter, Leonard Bernstein, Lalo Schiffren and George Butterworth. My portfolio contains a wide diversity of moods and styles and is presented as a result of serious artistic endeavour. My work has been produced under the supervision of Professor Peter Graham - Chair of Composition. The portfolio contains the following original compositions:- 1. Psalm 23 - a setting for Orchestra and choir 2. Caprice for Alto Saxophone and Wind Band 3. Sonata for Tuba and Piano 4. The Well of Eternity - Variations on Abbots Leigh for Brass band 5. Petite Suite for Brass Quintet 6. The Bridestones - A Rhapsody for Brass Band.