The Percussion Plus Classic Red Box Alto Diatonic Xylophone PP025 is a professional-quality Orff classroom instrument designed for schools, music academies, and percussion ensembles. Part of the renowned Classic Red Box series, it offers exceptional tuning accuracy, durable construction, and a bright, resonant tone, making it one of the most popular educational xylophones for classroom music and ensemble performance. Built with high-quality fibreglass note bars precisely tuned to A440, the PP025 delivers consistent pitch and excellent projection. Its solid Poplar wood resonator box with the signature red finish provides enhanced resonance and long-lasting durability. The instrument features 13 diatonic notes (C40–A61) and includes 2 F# bars and 1 Bb bar, allowing students to perform in the keys of C, F, and G major. It can also be paired with the PP026 Alto Chromatic Xylophone to create a complete chromatic instrument.