The Solo Challenge Belt encourages students to develop their solo performance skills in front of an audience. Students can choose a solo piece from one of the recorder books in the class bins. These pieces are a little longer than the folksongs in the regular Recorder Karate packets. Students are expected to play with expression and musicality. They should include appropriate dynamics (volume) and perform at the designated tempo (speed) indicated on the music. Students earn this belt after a successful performance for their classmates.