4 ▁metres ; ▁Section ▁ 3 ▁div ides ▁ 1 0 0 ▁half ▁notes ▁into ▁three ▁groups ▁of ▁ 2 3 ▁and ▁a ▁c oda . ▁According ▁to ▁C unning ham , ▁the ▁subject ▁of ▁the ▁work ▁is ▁fear : ▁it ▁describes ▁" aw aren ess ▁of ▁the ▁unknown , ▁struggle , ▁and ▁the ▁final ▁defeat ". ▁ ▁Sp ont aneous ▁Earth ▁Com posed ▁in ▁ 1 9 4 4 ▁for ▁a ▁dance ▁by ▁Mer ce ▁C unning ham . ▁ ▁The ▁Un available ▁Memory ▁of ▁Com posed ▁in ▁ 1 9 4 4 ▁for ▁a ▁dance ▁by ▁Mer ce ▁C unning ham . ▁Writ ten ▁entirely ▁on ▁a ▁single ▁staff , ▁primarily ▁scored ▁as ▁a ▁single ▁mel od ic ▁line . ▁ ▁Tri ple - P ac ed ▁No . ▁ 2 ▁This ▁work , ▁composed ▁in ▁ 1 9 4 4 , ▁is ▁a ▁revision ▁of ▁a ▁ 1 9 4 3 ▁piano ▁piece ▁titled ▁Tri ple - P ac ed . ▁The ▁ 1 9 4 4 ▁version ▁was ▁ch ore ograph ed ▁by ▁Mer ce ▁C unning ham . ▁ ▁The ▁Per il ous ▁Night ▁Com posed ▁in ▁ 1 9 4 4 . ▁This ▁is ▁C age ' s ▁first ▁large - scale ▁work ▁for ▁prepared ▁piano . ▁Tw enty - six ▁notes ▁are ▁prepared ▁with ▁various ▁materials . ▁The ▁piece ▁contains ▁six ▁separate ▁sections ▁with ▁different ▁rh yth mic ▁structures . ▁According ▁to ▁C age , ▁The ▁Per il ous ▁Night ▁express es ▁" the ▁l onel