mov ement ▁ 1 ) ▁to ▁following ▁the ▁or chestra ▁using ▁a ▁parallel ▁chart ▁( mov ement ▁ 2 ) ▁and ▁then ▁to ▁sharing ▁the ▁same ▁chart ▁with ▁the ▁or chestra ▁( mov ement ▁ 3 ). ▁P iano ▁prepar ation ▁in ▁the ▁Con cer to ▁is ▁rather ▁complex ▁and ▁involves , ▁among ▁other ▁things , ▁a ▁move able ▁pl astic ▁bridge ▁that ▁makes ▁possible ▁micro ton al ▁effects . ▁ ▁Lost ▁works ▁ ▁Sh immer a ▁Com posed ▁in ▁late ▁ 1 9 4 2 ▁for ▁a ▁dance ▁by ▁Mer ce ▁C unning ham . ▁ ▁L id ice ▁Com posed ▁in ▁ 1 9 4 3 ▁for ▁a ▁dance ▁by ▁Marie ▁March ow sky . ▁The ▁title ▁refers ▁to ▁L id ice , ▁a ▁Czech ▁village ▁destroyed ▁by ▁German ▁forces ▁in ▁ 1 9 4 2 . ▁ ▁See ▁also ▁▁ ▁List ▁of ▁compos itions ▁by ▁John ▁C age ▁ ▁References ▁and ▁further ▁reading ▁▁ ▁C age , ▁John . ▁ 1 9 7 3 . ▁Sil ence : ▁L ect ures ▁and ▁Writ ings , ▁Wes ley an ▁P aper back ▁( first ▁edition ▁ 1 9 6 1 ). ▁▁ ▁I sh ii , ▁Re iko . ▁ 2 0 0 5 . ▁The ▁Development ▁of ▁Ext ended ▁P iano ▁Te chni ques ▁in ▁Tw enti eth - Cent ury ▁American ▁Music , ▁pp .   3 8 – 4 1 . ▁The ▁Florida ▁State ▁University , ▁College ▁of ▁Music . ▁Av ailable ▁online : ▁▁ ▁Kost el an