I think I may have overestimated the general familiarity with both the themers and a few of the regular fill clues (
ERHU6DChinese spike fiddle
[----] ,
ATTO13AMetric prefix derived from Danish for "eighteen"
[----] ,
LAHTI15AFinnish city and 2021 European Green Capital
[-----] , and
SULA40AGeneric name for a booby
[----] in particular may have been a bit more obscure than I'd intended), but I'm glad you enjoyed regardless!
