Alex Miller completed his Bachelor of Music at the Queensland Conservatorium of Music in 2015, and was appointed Tutti Horn of the Adelaide Symphony Orchestra in 2016. In May 2018, Alex was appointed as the Associate Principal Horn of the Queensland Symphony Orchestra. As a freelance artist, he has played principal and tutti horn with a number of major Australian orchestras including the Adelaide Symphony Orchestra, the Queensland Symphony Orchestra, the Tasmanian Symphony Orchestra, and the Canberra Symphony Orchestra. Alex has also appeared as a soloist on several occasions, having performed concertos by Strauss, Mozart, Haydn, and Schumann with orchestras including the Queensland Symphony Orchestra, the Queensland Youth Orchestra, and the Burnside Symphony Orchestra. During his studies at the Conservatorium, he played principal horn with the Australian Youth Orchestra and the Queensland Youth Orchestra, and toured internationally with both ensembles.