' ▁anymore ." ▁Mike ▁Love ▁remembered : ▁" B rian ▁is ▁so ▁sp ont aneous ▁that ▁if ▁there ' s ▁a ▁piano ▁and ▁two ▁or ▁three ▁people ▁around ▁to ▁sing ▁parts , ▁he ' ll ▁sit ▁down ▁and ▁write ▁a ▁song ▁in ▁five ▁minutes . ▁But ▁if ▁you ▁don ' t ▁get ▁it ▁right ▁then , ▁he ▁goes ▁off ▁and ▁dro ps ▁it ." ▁According ▁to ▁Van ▁Dy ke ▁Park s , ▁Wilson ▁was ▁unique ▁in ▁the ▁way ▁he ▁approached ▁piano ▁by ▁" ham mer ing " ▁e ighth - note ▁tri ad ▁ch ords . ▁On ▁the ▁subject ▁of ▁Wilson ' s ▁Bed room ▁T apes , ▁Beach ▁Boys ▁archiv ist ▁Alan ▁Bo yd ▁observed : ▁" A ▁lot ▁of ▁the ▁music ▁that ▁Brian ▁was ▁creating ▁during ▁this ▁period ▁was ▁full ▁of ▁sync op ated ▁exer cis es ▁and ▁counter points ▁p iled ▁on ▁top ▁of ▁j itter y ▁e ighth - note ▁clusters ▁and ▁l op ing ▁sh uffle ▁gro ov es . ▁You ▁get ▁hints ▁of ▁it ▁earlier ▁in ▁things ▁like ▁the ▁tags ▁to ▁' Cal iforn ia ▁Girls ,' ▁' W ould n ' t ▁It ▁Be ▁Nice ' ▁and ▁all ▁throughout ▁Sm ile , ▁but ▁it ▁takes ▁on ▁an ▁almost ▁man ic ▁edge ▁in ▁the ▁' 7 0 s ." ▁ ▁Form ▁and ▁structure ▁ ▁Most ▁of ▁his ▁ch ord ▁progress ions ▁stem ▁from ▁at ▁least ▁one ▁of ▁his ▁main ▁music ▁influ ences : ▁rock ▁and ▁roll , ▁do o - w op , ▁and ▁vocal ▁jazz .