Gabe is a professional pianist, vocalist, accordionist, composer, arranger and teacher since 1988. His commissioned works include music for big band, string quartet, vocal ensemble, woodwind ensemble, percussion ensemble, percussion duo, mixed chamber ensemble, funk band and small jazz ensemble.

He has taught hundreds of students both privately and as a faculty member of Duke University, University of Miami, International College of Music in Kuala Lumpur, and University of Malaya. His classroom teaching includes ensemble, composition, arranging, theory, ear training and Alexander Technique.