Wim Poesen wrote this wonderful waltz for flemish bagpipes for his good friend Polle Ranson. The score was published in the French Trad Magazine. This melody has been recorded by different groups in the world. Here are my favorite versions:
Source: https://www.folktunefinder.com/tunes/195056 and http://www.klankkleuren.be/walsvoorpolle/walsvoorpolle-trad.jpg