30 March 2026Les Benedict Trombone virtuoso and multi instrumentalist "lefreQue provides a nearly miraculous improvement to my various brass instruments. The…
30 March 2026Jos Jansen Bass Trombone Soloist and music teacher "I must say I am quite impressed. Try it yourself, and you'll…
30 March 2026Steve Trapani Trombone and Bass Tuba, Oakland Symphony, Festival of Arts/Pageant of the Masters en California State University, Long Beach…
30 March 2026Daniel Casimir Trombonist, composer en arrangeur. "This is an absolutely amazing invention. It works perfectly for all brass instruments as…
