Camas — Portland jazz saxophonist Patrick Lamb visited Grass Valley Elementary School in May for a performance, trading solos with young musicians before leading them in a “Pied Piper” conga line through the auditorium. Lamb, a proponent of music education, played solo at the school’s May 28 year-end concert, and jammed with its vocal jazz group. The ensemble, made up of students from third to fifth grade, was recently awarded a 2013 DownBeat Student Music Award for Outstanding Performance.