▁D ances ▁Com posed ▁in ▁ 1 9 4 5 . ▁This ▁work ▁is ▁similar ▁in ▁style ▁( large - scale ▁virt u os ic ▁writing ) ▁and ▁technique ▁( rh yth mic ▁proport ions ▁dependent ▁on ▁the ▁tempo ) ▁to ▁A ▁Book ▁of ▁Music ▁and ▁too ▁was ▁commission ed ▁by ▁Fitz dale ▁and ▁Gold . ▁ ▁Ens emble ▁ ▁Second ▁Const ruction ▁ ▁Com posed ▁in ▁ 1 9 3 9 – 4 0 . ▁This ▁piece ▁is ▁scored ▁for ▁various ▁per cussion ▁instruments ▁and ▁piano . ▁The ▁score ▁instruct s ▁the ▁perform er ▁to ▁insert ▁a ▁sc rew ▁and ▁a ▁strip ▁of ▁card board ▁between ▁several ▁strings , ▁but ▁the ▁piano ▁part ▁is ▁written ▁essentially ▁for ▁the ▁string ▁piano ▁technique . ▁The ▁rh yth mic ▁proport ions ▁— ▁ 1 6 ▁groups ▁of ▁ 1 6 ▁bars ▁divided ▁ 4 , ▁ 3 , ▁ 4 , ▁ 5 ▁— ▁are ▁defined ▁in ▁the ▁score , ▁but ▁the ▁music ▁doesn ' t ▁always ▁rely ▁on ▁them . ▁ ▁She ▁Is ▁As leep ▁An ▁un fin ished ▁suite ▁of ▁different ▁pieces , ▁composed ▁in ▁ 1 9 4 3 . ▁The ▁two ▁completed ▁movements ▁are : ▁ ▁Quart et ▁for ▁ 1 2 ▁tom - t oms ▁ ▁Du et ▁for ▁voice ▁and ▁prepared ▁piano ▁The ▁piano / prep ared ▁piano ▁piece ▁A ▁Room ▁( 1 9 4 3 , ▁see ▁above ) ▁was ▁intended ▁to ▁be ▁third ▁part ▁of ▁She ▁Is ▁As leep . ▁This ▁piece ▁is ▁one ▁of ▁the ▁earliest