German art songs (6)
I believe the answer is:
lieder
'german art songs' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for lieder that I've seen before include "Relied on German song genre" , "German art songs" , "Relied on German song (6)." , "Art songs for voice and piano" , "Musical settings for solo voice and piano" .)