For those who play folk music with "Celtic" whistles

 Tone hole chart for C and D Celtic Whistles

There is a growing interest by folk to play the Celtic whistles for tunes and songs. The KelticDead Music initiative designs all KDM sheet music arrangements (as seen in the KDM Broadsides) to be easily played with the "C" and "D" six-hole whistles. The chart below shows the KDM tone hole recommendations for the D and C scales.