The sonor orff primary deep bass diatonic xylophone is ideal for classroom music education ensemble use and hands on learning environments. It features 16 notes in a diatonic c major scale including additional f sharp and bb notes to support a wider range of music. Each sound bar is made from fsc certified pao rosa wood and clearly printed with note lines to support beginners in identifying pitch and learning notation.built for both sound quality and sustainability the resonator box uses fsc certified birch plywood and is finished with proterra ecological lacquer. This makes the instrument suitable for all age groups offering a safe and durable option for repeated classroom use. The overtone tuning up to a ensures tonal clarity while fundamental tuning from bb upward reinforces the depth of the bass tones.