Browse all tin whistles in F. This pages shows Big Whistle’s current stock of low and high whistles in the key of F. In terms of high whistles, we tend to stock Generation’s F whistle. We also stock a number of low whistles in F from brands including Dixon, Goldie, Carbony, and MK. Aside from D, the key of F is one of the more popular pitches, especially for low whistles.