▁also ▁wrote ▁Cor te ge ▁for ▁four ▁cell os ▁( 1 9 3 9 , ▁published ▁ 1 9 4 1 ) ▁and ▁a ▁Su ite ▁in ▁D ▁for ▁vi ola ▁and ▁piano ▁( 1 9 3 8 ). ▁M ini atures ▁for ▁viol in ▁and ▁piano ▁included ▁Four ▁F an cies ▁( 1 9 2 3 ), ▁Fire f lies ▁( Op . ▁ 1 8 / 2 0 ), ▁the ▁Vari ations ▁( 1 9 2 7 ) ▁and ▁Aut umn ▁Vo ices ▁written ▁just ▁prior ▁to ▁his ▁death .. ▁ ▁Holland ' s ▁music ▁for ▁solo ▁piano , ▁included ▁Vari ations ▁on ▁a ▁Swedish ▁Air ▁( 1 9 0 6 ), ▁and ▁P rel udes ▁( 1 9 4 4 ). ▁A ▁number ▁of ▁his ▁works ▁used ▁remote ▁keys , ▁including ▁T occ ata ▁in ▁E - flat ▁minor , ▁the ▁Son at ina ▁in ▁F - sharp ▁minor ▁( both ▁ 1 9 3 8 ), ▁and ▁the ▁Vari ations ▁on ▁an ▁Original ▁Th eme , ▁also ▁in ▁F - sharp ▁minor . ▁ ▁Song ▁compos itions ▁included ▁the ▁Op us ▁ 4 ▁and ▁Op us ▁ 6 ▁sets , ▁set ▁to ▁German ▁words , ▁two ▁Sh elle y ▁songs ▁( 1 9 0 8 ) ▁and ▁three ▁Fle cker ▁songs ▁( 1 9 3 8 ). ▁Philip ▁Sc ow cro ft ▁cons iders ▁his ▁most ▁important ▁vocal ▁items ▁to ▁be ▁The ▁Songs ▁from ▁Ny as aland ▁( Op us ▁ 2 0 ), ▁for ▁voice ▁and ▁or chestra