I just bought a new harmonica, a Hohner Marine Band A440 Low-Tuned in Eb, and the lowest notes, I believe actually just the 1 hole draw is making a pinging sound when I play it. I'm kind of a noob, and only started recently with a C and quickly decided I wanted a lower one. Is the sound caused by a technique issue with the low-tuned harmonica? The sound is almost like if you jingled one of the little metal cymbals on a tambourine every time I draw the lowest note. I'm not sure where the issue lies, with me or the harp, or if it's supposed to do that.... I really don't know. Any help would be appreciated! Thanks!