Hurricane Harps, "Hot House Blues", Replacement Harmonica Case for 10 hole Diatonic Harps, Single by Hurricane Harps. $0.99. This is a replacement hard shell plastic harmonica case from Hurricane Harps. They fit all 10 hole diatonic, Marine Band or "BluesHarps" from Hohner, Lee Oskar, Suzuki and others. If your current case is lost or damaged, pick up some of these today. They are available in singles, 3 packs and 6 packs. This listing is for a single case.