The Echo Harp Harmonica Hohner tremolo 55/80, key of C/G, is a vintage musical instrument made by the renowned brand Hohner in Germany. This tremolo harmonica features a unique Echo Harp model that produces a special tremolo effect, perfect for folk and world music. The key of C/G allows for versatile playing in different musical styles, while the iconic design and craftsmanship of Hohner make this harmonica a timeless and high-quality piece for any musician looking to add a vintage touch to their collection.