Most published journal articles describing professional development (PD) initiatives for K-12 music teachers have not explicitly alluded to the "features of high-quality PD", a solid theoretical framework arisen in content areas with more tradition in PD research (e.g. mathematics and science education). The goal of this review was to examine the music-specific PD literature using this framework. We reviewed seven mainstream music education journals from 1990 to 2015, identifying 17 articles reporting on a total of 24 PD initiatives (e.g. workshops, courses, programmes, school-based PD). Results show interesting differences in the extent to which the various features considered (i.e. content focus, active learning opportunities, collective participation, duration, and coherence) are exhibited in these music-specific initiatives. This analysis is relevant for music education theory, policy, and practice, as it suggests concrete ways of improving the quality of the PD offered to school music teachers.