Discover the harmony of the Master Key chromatic pitch instrument, a vintage gem from Kratt Co., now available with its original box. This timeless piece is designed to ensure your music is always pitch-perfect, embracing the standard A-440 frequency that professional musicians adhere to. Crafted for both collectors and music enthusiasts, the instrument reflects a rich history of musical innovation and is a testament to the enduring quality of Kratt Co.'s craftsmanship. Whether used for tuning or as a unique decorative piece, the Master Key pitch instrument is a must-have for those who appreciate the intersection of vintage aesthetics and musical precision.