▁of ▁technical ▁prof ic iency ▁or ▁lack ▁there of ― could ▁make ▁music ▁as ▁long ▁as ▁it ▁represented ▁genu ine , ▁natural istic ▁self - expression ." ▁Specific ▁acts ▁that ▁" sign ific antly ▁contributed ― direct ly ▁and ▁indirect ly ― to ▁contemporary ▁popular ▁music " ▁include ▁Syd ▁Bar rett , ▁Captain ▁Be ef heart , ▁the ▁Sh ag gs , ▁Harry ▁Part ch , ▁Robert ▁Gra et ting er , ▁and ▁Daniel ▁John ston . ▁Con vers ely , ▁the ▁book ▁F aking ▁It : ▁The ▁Qu est ▁for ▁Auth entic ity ▁in ▁Popular ▁Music ▁( 2 0 0 7 ) ▁arg ues ▁that ▁" f ew ▁of ▁the ▁out s iders ▁pra ised ▁by ▁their ▁fans ▁can ▁be ▁called ▁innov ators ; ▁most ▁of ▁them ▁are ▁simply ▁na ï ve ." ▁▁ ▁Sk ip ▁Sp ence ' s ▁O ar ▁( 1 9 6 9 ), ▁Be ef heart ' s ▁Tr out ▁M ask ▁Rep lica ▁( produ ced ▁by ▁Frank ▁Z appa , ▁ 1 9 6 9 ), ▁and ▁Bar rett ' s ▁The ▁Mad cap ▁L augh s ▁( 1 9 7 0 ), ▁according ▁to ▁music ▁historian ▁John ▁Enc arn ac ao , ▁" w ere ▁particularly ▁important ▁in ▁helping ▁to ▁define ▁a ▁framework ▁through ▁which ▁out s ider ▁record ings ▁are ▁understood ▁... ▁[ They ] ▁seed ed ▁many ▁ideas ▁and ▁practices , ▁aff irm ing ▁them ▁as ▁des irable ▁in ▁the ▁context ▁of ▁rock ▁myth ology ." ▁In ▁ 1 9 6 9