Musical instrument that is played by the wind (7,4)
(Other definitions for aeolian harp that I've seen before include "musical instrument" , "It's played by the wind" , "Wind-controlled instrument" , "Wind-operated instrument" , "Wind-played instrument" .)
(Other definitions for aeolian that I've seen before include "Arising from wind action" , "Type of harp, uses wind" , "Type of harp, the strings sound when wind passes over them" , "Relating to wind action" , "Type of harp, using wind" .)