A native of Baltimore, Maryland Dr.Oscar Passley has served on the faculties of the Elan International Music Festival, University of Kentucky Summer Trumpet Institute, Blast of Brass Summer Festival, Tarrant County College (Northwest campus), Northlake College, Collin College, University of Texas at Arlington and co-founder/host of the annual Dallas Trumpet Workshop. Currently, Passley is the faculty coordinator of the music department at Eastfield College.  He is sought after as an adjudicator and clinician throughout the state and nation conducting clinics and workshops at schools and festivals including the Dallas Music Educators Association Jazz Festival, Tarleton State University Jazz Festival, Southwestern Oklahoma State University Jazz Festival, Baltimore County Public Schools High School All Honors Jazz Concert, National Trumpet Competition Jazz Semi-Finals, and the International Trumpet Guild Jazz Scholarships Competition. In addition, he has also been a guest artist at numerous colleges and universities throughout the country and abroad including Mountain View College, Richland College, Missouri State University, Northeastern State University, Southeastern Oklahoma State University, Oklahoma Baptist University, Texas Wesleyan University, Texas A&M University at Commerce, University of Dallas, Texas Christian University,  Baylor University, Nelson Mandela University, Stellenbosch University and University of Pretoria.