Vibrato Trainer is a free, browser-based tempo-synced vibrato metronome for musicians, built on original research by Michael Van Bebber. His work reveals that vibrato is neither random nor a set rate per musician, but instead is a rhythmic subdivision of the musical pulse, and the specific subdivision changes predictably as tempo changes.
The insight — that vibrato rate is a function of tempo and subdivision, not a fixed speed — represents a new framework for understanding and teaching vibrato. Through analysis of performers across jazz, classical, pop, country, and R&B, Michael Van Bebber identified that vibrato oscillation rates consistently align with standard rhythmic subdivisions of the beat. This framework maps vibrato across six distinct tempo zones:
Van Bebber's research is the first to systematically map vibrato to the rhythmic grid across the full range of musical tempos.
Vibrato Trainer is designed for singers, string players (violin, viola, cello), guitar players, wind players (trumpet, saxophone, flute, clarinet), and jazz musicians of all kinds. Whether you're learning vibrato for the first time or refining your technique, this tool helps you lock your vibrato into the rhythmic grid.