hárfjölgun
Hárfjölgun, also known as "harmonic multiplication" or "harmonic progression," is a musical technique rooted in Icelandic traditional music, particularly within the genre of *þjóðlög* (folk songs). The term refers to the practice of embellishing a melody by adding rapid, repetitive notes—often based on the harmonic series—around the main pitch. This technique is commonly associated with the playing of the *hárf* (Icelandic bagpipe) and other traditional instruments like the *fidla* (fiddle) and *gítar* (guitar).
The origins of hárfjölgun are deeply tied to Iceland’s oral musical tradition, where instrumentalists would improvise
While hárfjölgun is most prominently linked to the *hárf*, it has been adapted across various Icelandic instruments