▁continue ▁the ▁story . ▁Book ▁I ▁concerns ▁the ▁journey ▁of ▁the ▁Roc in ante , ▁a ▁spaces hip ▁that ▁enters ▁a ▁black ▁hole ▁in ▁outer ▁space . ▁Pe art ▁ended ▁the ▁story ▁without ▁a ▁set ▁conclusion , ▁and ▁only ▁began ▁to ▁write ▁Book ▁II ▁three ▁weeks ▁before ▁the ▁band ▁was ▁set ▁to ▁travel ▁to ▁Rock field ▁Studios . ▁The ▁process ▁was ▁stress ful ▁for ▁Pe art , ▁which ▁took ▁" h ours ▁of ▁te aring ▁ ▁hair ▁out ", ▁and ▁was ▁half ▁complete ▁when ▁they ▁arrived . ▁The ▁sequ el , ▁like ▁Book ▁I , ▁uses ▁myth ology ▁and ▁symbol ism ▁to ▁dep ict ▁a ▁conflict ▁between ▁the ▁gods ▁Apol lo ▁and ▁D ion ys us , ▁which ▁is ▁resolved ▁when ▁C yg n us ▁interven es , ▁claim ing ▁a ▁balance ▁of ▁heart ▁and ▁mind ▁are ▁what ▁is ▁needed ▁for ▁humans ▁to ▁live ▁well . ▁Pe art ▁introduced ▁the ▁g ong ▁and ▁timp ani ▁to ▁his ▁per cussion ▁set ▁for ▁the ▁first ▁time ; ▁he ▁hadn ' t ▁thought ▁of ▁adding ▁the ▁instrument ▁on ▁previous ▁albums ▁but ▁thought ▁Hem is pher es ▁needed ▁it . ▁ ▁Side ▁two ▁" Circ um st ances " ▁is ▁the ▁first ▁of ▁two ▁shorter ▁tracks ▁on ▁Hem is pher es . ▁With ▁the ▁band ▁having ▁acc ustom ed ▁its ▁audience ▁to ▁longer , ▁more ▁elaborate ▁formats , ▁this ▁song ▁is ▁qualified ▁by ▁Lee ▁as ▁an ▁experiment , ▁an ▁attempt ▁to ▁break ▁away ▁from ▁the ▁pro g ▁formula ▁that ▁would ▁ste er ▁the ▁band ▁into ▁new ▁directions