▁ 1 9 6 6 ) ▁was ▁a ▁French ▁composer ▁and ▁critic , ▁remembered ▁mainly ▁for ▁his ▁criticism . ▁ ▁Biography ▁He ▁was ▁born ▁Roland ▁Alex is ▁Manuel ▁L év y ▁in ▁Paris , ▁to ▁a ▁family ▁of ▁Belg ian ▁and ▁Jewish ▁orig ins . ▁He ▁studied ▁composition ▁under ▁Vincent ▁d ' Ind y ▁and ▁Albert ▁R ous sel . ▁As ▁a ▁young ▁man ▁he ▁be fri ended ▁composer ▁Erik ▁S atie , ▁who ▁helped ▁him ▁to ▁make ▁numerous ▁influ ential ▁connections . ▁In ▁ 1 9 1 1 , ▁S atie ▁introduced ▁Roland - Man uel ▁to ▁Maurice ▁R avel , ▁whose ▁pup il , ▁friend ▁and ▁bi ograph er ▁he ▁soon ▁became . ▁ ▁In ▁ 1 9 4 7 , ▁he ▁was ▁appointed ▁Professor ▁of ▁A est het ics ▁at ▁the ▁Conserv atoire ▁de ▁Paris , ▁where ▁he ▁remained ▁until ▁his ▁ret irement ▁in ▁ 1 9 6 1 , ▁making ▁many ▁contributions ▁to ▁musical ▁theory ▁and ▁criticism , ▁even ▁assist ing ▁Ig or ▁Stra vin sky ▁by ▁g host - writing ▁the ▁theoretical ▁work ▁" The ▁Po et ics ▁of ▁Music ". ▁In ▁addition ▁to ▁theoretical ▁works , ▁he ▁wrote ▁and ▁composed ▁various ▁works ▁for ▁stage , ▁especially ▁com ic ▁oper as , ▁and ▁screen , ▁developing ▁a ▁partners hip ▁with ▁director ▁Jean ▁Gr ém illon , ▁for ▁five ▁of ▁whose ▁films ▁he ▁composed ▁the ▁scores . ▁ ▁Roland - Man uel ' s ▁criticism ▁included ▁several ▁mon ograph s ▁on ▁the ▁music ▁of ▁R avel ▁from ▁the ▁perspective