He is currently the principal double bassist of the Dallas Chamber Symphony and Plano Symphony Orchestra. Unzicker has performed as principal of the AIMS Festival Orchestra (Graz, Austria), Caminos del Inka, Caprock Pro Musica, Dallas Chamber Orchestra, Dallas Wind Symphony,Lubbock Symphony Orchestra, Metropolitan Classical Ballet, Orquestra Divertimento (Costa Rica), Santa Fe Pro Musica. He has performed and lectured at the International Society of Bassists, American String Teachers Association, and Texas Music Educators Association Conventions. Unzicker is featured in articles on playing and teaching the double bass in The Strad and Strings Magazine.