Campbell first began playing brass instruments at school, and went on to study French Horn at Sydney Conservatorium. After three years playing with the Queensland Symphony Orchestra and Sydney Symphony Orchestra he furthered his studies in Germany, at the end of which he went on to become Solo Horn in several leading European orchestras. Returning to Australia he played 1st Horn with the Australian Opera Orchestra, and taught French Horn at Sydney Conservatorium. He has tutored at both National Music Camp and at Pan Pacific International Music Camp. Until recently he taught Brass at Orange Regional Conservatorium. Past students occupy positions in orchestras and teaching institutions in Australia and Europe.
David started learning trumpet and piano as a child. He has a Bachelor of Music degree in trumpet performance and a Bachelor of Arts (Honours) degree in history from the University of Adelaide. He also has a Master of Music degree majoring in conducting from The Pennsylvania State University and a Doctor of Philosophy degree majoring in history from the University of Adelaide. From the Australian Music Examinations Board (AMEB), he has a Certificate of Performance in Singing. As a trumpet teacher and player, he has many years of teaching experience in public and private schools and has played trumpet with the Australian Opera and Ballet Orchestra and the Canberra Symphony Orchestra. As a singing teacher, David taught for four years at Tamworth Regional Conservatorium of Music and joined Mitchell Conservatorium in 2018. He also teaches piano and accompanies at student recitals, Eisteddfods and AMEB exams.
Brendon McLeod has taught brass instruments since he was in high school. His main instrument is the trombone. He has expertise in Jazz music, having studied Jazz for a year at the Sydney Conservatorium, as well as with Graeme Lyall at the Generations in Jazz Academy (now the James Morrison Academy) In Mount Gambier, South Australia. He holds a Diploma of Music (Jazz), a Bachelor of Liberal Studies, a Bachelor of Arts (Honours) in Literature, and a Masters of Teaching English to Speakers of Other Languages.