▁one ▁or ▁two ▁songs . ▁ ▁Por ter ' s ▁most ▁notable ▁contributions ▁to ▁the ▁Do ob ie ▁Brothers ' ▁sound ▁were ▁his ▁busy ▁and ▁p unch y ▁bass ▁lines ; ▁his ▁distinct ive ▁tone ▁per me ates ▁all ▁of ▁the ▁band ' s ▁classic ▁compos itions ▁and ▁hits . ▁O ften ▁p ict ured ▁with ▁his ▁trust y ▁A lem b ic ▁or ▁Gib son ▁bass es ▁during ▁the ▁sevent ies ▁( us ually ▁with ▁a ▁Th under bird ▁or ▁Ri pper ▁bass ▁and ▁earlier ▁with ▁an ▁E B - 0 L ), ▁Por ter ▁played ▁F ender ▁instruments , ▁most ▁not ably ▁the ▁F ender ▁Jazz ▁Bass , ▁along ▁with ▁BC ▁Rich ▁E ag les . ▁ ▁His ▁early ▁technique , ▁with ▁rich ▁ch ord al ▁attack , ▁was ▁based ▁mostly ▁on ▁his ▁pick ing ▁style , ▁favor ing ▁the ▁guitar ▁pick ▁over ▁finger style ▁playing . ▁The ▁hit ▁title ▁track ▁from ▁Tak in ' ▁It ▁to ▁the ▁Stre ets , ▁which ▁prom in ently ▁features ▁Por ter ' s ▁th und ering , ▁picked ▁notes , ▁is ▁a ▁prime ▁example ▁of ▁this ▁technique . ▁More ▁recently , ▁even ▁performing ▁the ▁old ▁re per toire ▁with ▁the ▁Do ob ies , ▁Por ter ▁has ▁been ▁playing ▁new , ▁custom - made ▁instruments ▁almost ▁exclus ively ▁finger ▁style . ▁ ▁Por ter ▁left ▁the ▁Do ob ies ▁in ▁ 1 9 8 0 , ▁cit ing ▁fr ustration ▁with ▁the ▁hect ic ▁and ▁constant ▁tour ing ▁schedule . ▁His ▁replacement ▁was ▁session