Jikọta ihe ndị mere eme ma zaa nke a: Gịnị bụ aha onye Denmark ahụ na-akụ egwú nke nwụrụ na 1931 ma bụrụ onye dere String Quartet No. 4 na F isi ma ọ bụ Quartet for Two Violins, Viola and Cello na F isi, Opus 44?
Carl August Nielsen