▁eye ▁set ▁on ▁any ▁specific ▁goals ▁or ▁big ▁dream s ." ▁ ▁Career ▁▁ 1 9 6 0 – 1 9 6 6 : ▁Early ▁career ▁ ▁In ▁ 1 9 6 0 , ▁Campbell ▁moved ▁to ▁Los ▁Angeles ▁to ▁become ▁a ▁session ▁music ian . ▁ ▁That ▁October , ▁he ▁joined ▁the ▁Cham ps . ▁By ▁January ▁ 1 9 6 1 , ▁Campbell ▁had ▁found ▁a ▁day time ▁job ▁at ▁publishing ▁company ▁American ▁Music , ▁writing ▁songs ▁and ▁recording ▁dem os . ▁Because ▁of ▁these ▁dem os ▁Campbell ▁soon ▁was ▁in ▁demand ▁as ▁a ▁session ▁music ian ▁and ▁became ▁part ▁of ▁a ▁group ▁of ▁studio ▁mus icians ▁later ▁known ▁as ▁the ▁W reck ing ▁C rew . ▁ ▁Campbell ▁played ▁on ▁record ings ▁by ▁the ▁Beach ▁Boys , ▁Bobby ▁Dar in , ▁Frank ▁Sin atra , ▁R icky ▁Nelson , ▁Dean ▁Martin , ▁Nat ▁King ▁Cole , ▁the ▁Mon ke es , ▁Nancy ▁Sin atra , ▁Mer le ▁H agg ard , ▁Jan ▁and ▁Dean , ▁B ing ▁C ros by , ▁Phil ▁Spect or , ▁Sam my ▁Davis ▁Jr ., ▁Dor is ▁Day , ▁Bobby ▁V ee , ▁The ▁Ever ly ▁Brothers , ▁Sh elle y ▁Fab ares , ▁The ▁C asc ades , ▁Paul ▁Re vere ▁& ▁the ▁Ra iders , ▁Wayne ▁Newton , ▁The ▁First ▁Edition , ▁The ▁King ston ▁T rio , ▁Roger ▁Miller , ▁Gene ▁Clark , ▁Lou ▁Raw ls , ▁Claude ▁King , ▁Lor ne ▁Gre ene , ▁Ron nie ▁D ove ▁and ▁ ▁El