This Hohner Big River Harp MS Diatonic - Key of Bb is a terrific starter instrument for anyone looking forward to playing music. The abbreviation MS stands for Modular System an integrated concept for Hohner s harmonica design. MS-harmonicas benefit from innovations that improve the playing characteristics and also significantly facilitate maintenance and handling. All MS-parts (combs reed plates and covers) can be combined individually. Simple screw connections on the Hohner harp allow for an easy assembly. It allows players to adjust the instrument to their individual requirements. An original Hohner harmonica harp has quality you can trust and brings music to your life. Attractive and robust this instrument is a quality staple for beginners and a sure performer for seasoned veterans. This Hohner Big River Harp MS Diatonic - Key of Bb is available in all 12 major keys.