We started with our SSH-10 and then got requests for a high-end harmonica, and thus the SSH-50 Aluminum comb 10-hole harmonica was birthed. We wanted a similar look to the SSH-10 but upgrades on all the essential elements such as phosphor bronze reeds and 1.2 mm copper sound board. This harmonica plays like a dream. I have had this tested by pros and they have said it plays like a much more expensive harmonica. If you want a pro harmonica that will allow you to bend notes and create that classic blues vibe, you will be absolutely content with the key of C SSH-50.