Got this slide whistle because it was cheap and wanted to try it out. In the beginning it worked fine, but after a few days I already have problems with it. The slide itself is really stiff, and sometimes I can't even get the right notes out of it. Maybe there is a way to make it better, but I can't find any reviews or resources about this product so I'm afraid I'm out of luck. Guess it was better in the end to spend a bit more money and get something better instead...