▁▁ ▁Sac red ▁Heart : ▁Ex pl os ion ▁ ▁March ▁is ▁a ▁brief ▁closing ▁piece , ▁commission ed ▁by ▁the ▁or chestra ▁as ▁part ▁of ▁the ▁He ch inger ▁Enc ores ▁series . ▁The ▁Th r one ▁and ▁Sac red ▁Heart ▁are ▁the ▁second ▁and ▁third ▁sections ▁of ▁a ▁planned ▁orch est ral ▁tr il ogy ▁entitled ▁In ▁the ▁Real ms ▁of ▁the ▁Un real , ▁each ▁movement ▁of ▁which ▁is ▁based ▁on ▁the ▁life ▁and ▁work ▁of ▁a ▁different ▁American ▁out s ider ▁or ▁vision ary ▁artist . ▁ ▁The ▁Th r one ▁is ▁a ▁musical ▁dep iction ▁of ▁Washington ▁out s ider ▁artist ▁James ▁Ham pton ' s ▁( 1 9 0 9 - 1 9 6 4 ) ▁sculpt ural ▁work ▁of ▁the ▁same ▁name . ▁ ▁After ▁its ▁premi ere , ▁The ▁Washington ▁Post ▁described ▁the ▁piece ▁as ▁having ▁" amb it ious ▁scale ▁and ▁complexity " ▁The ▁piece ▁has ▁subsequently ▁been ▁performed ▁by ▁the ▁New ▁York ▁Phil harm onic ▁at ▁Lincoln ▁Center ' s ▁A very ▁Fischer ▁Hall , ▁and ▁by ▁the ▁Los ▁Angeles ▁Phil harm onic ▁at ▁the ▁Hollywood ▁Bowl . ▁ ▁Sac red ▁Heart : ▁Ex pl os ion ▁was ▁commission ed ▁in ▁October ▁ 2 0 0 7 , ▁as ▁a ▁re vised ▁version ▁of ▁something ▁Fried man ▁wrote ▁while ▁a ▁student ▁at ▁Ju illi ard . ▁ ▁This ▁is ▁based ▁on ▁the ▁work ▁of ▁vision ary ▁artist ▁Henry ▁Dar ger , ▁of ▁Chicago ▁( 1 8 9 2 - 1 9 7 2