I have a Hohner D/G Erica which hasn't been out of its case for ten years. As a harmonica player I thought the push-pull would be familiar as it's the same pattern as the blow-draw on the harp. Three things have deterred me from getting any good on it: missing notes at the bottom end (replaced by useless accidentals!), my elephantine technique with the bellows and, not least, the fact that I breathe in on every pull note and breathe out on every push note!!

Steve (ignoramus). :-(