Pre-owned J. Callet Soloist Bb Trumpet, Silver PlateJ. Callet Soloist B Trumpet Excellent Condition Building on the success of the Callet New York series, the Soloist was Jerome Callets first fully professional trumpet in both design and construction. Developed in collaboration with Kanstul in California, the Soloist combines Callets innovative acoustical design with Kanstuls renowned craftsmanship. This example features a one piece, 4 7 8 hand hammered bell modeled after the classic Benge design, a