 local musical traditions
... that in certain rural areas of Denmark such as Fanø, Læsø, and in parts of Western Jutland local musical traditions dating back to the late 18th century were maintained well into the 20th century?
... that in certain rural areas of Denmark such as <a href="./Fanø" id="mwDDw" rel="mw:WikiLink" title="Fanø">Fanø</a>, <a href="./Læsø" id="mwDD0" rel="mw:WikiLink" title="Læsø">Læsø</a>, and in parts of Western <a href="./Jutland" id="mwDD4" rel="mw:WikiLink" title="Jutland">Jutland</a> <b id="mwDD8"><a href="./Danish_traditional_music" id="mwDEA" rel="mw:WikiLink" title="Danish traditional music"> local musical traditions</a></b> dating back to the late 18th century were maintained well into the 20th century?