Theory: The Overtone Series

This is a brief explanation of the overtone series and how important it is to hammered dulcimer players.  If you are interested in learning more, do some research on your own and also look up "equal temperament".

The overtone series can explain so much about music, for example, why pentatonic scales are so universal and so satisfying to us.  It also explains why our instruments sound so much different when they're fine-tuned vs. pretty-much-in-tune vs. totally out of tune.