When an "Overblow Harp" was first designed by Dr. Henry Bahnson in 1990, the aim was to make available for the average player on the diatonic harmonica the “missing” notes that Howard Levy was hitting with great facility. We knew other notes were available on the ten holer but the same tones were available by normal playing. The first overblow harmonica was hand-filed and the first batch of one hundred cost over $120 each to make.

Now we make available a more economical version with the same functionality as the original. This harp is based on a Hohner Special 20 and features a slide valve mechanism that, like training wheels on a kid’s bike, can make overblowing so much easier (10 times, Yerxa once said).