. ▁ ▁In ▁and ▁around ▁Boston , ▁Marc ▁has ▁taught ▁private ▁less ons ▁to ▁asp iring ▁bass ▁players ▁and ▁impro vis ors ▁for ▁many ▁years . ▁Te aching ▁is ▁a ▁fort ifying ▁out let ▁for ▁Marc ' s ▁invent ive ▁approaches ▁to ▁modern ▁electric ▁bass ▁playing ▁and ▁impro vis ing . ▁ ▁References ▁ ▁Category : 1 9 7 7 ▁birth s ▁Category : L iving ▁people ▁Category : American ▁rock ▁bass ▁guitar ists ▁Category : American ▁male ▁bass ▁guitar ists ▁Category : The ▁S lip ▁( band ) ▁members ▁Category : T abor ▁Academy ▁al umn i ▁Category : B erk lee ▁College ▁of ▁Music ▁al umn i ▁Category : 2 1 st - century ▁American ▁bass ▁guitar ists ▁Category : 2 1 st - century ▁American ▁male ▁mus icians <0x0A> </s> ▁Net ▁Prom oter ▁or ▁Net ▁Prom oter ▁Sc ore ▁( N PS ) ▁is ▁a ▁management ▁tool ▁that ▁can ▁be ▁used ▁to ▁gauge ▁the ▁loyal ty ▁of ▁a ▁firm ' s ▁customer ▁relationships . ▁ ▁It ▁serves ▁as ▁an ▁alternative ▁to ▁traditional ▁customer ▁satisfaction ▁research ▁and ▁is ▁claimed ▁to ▁be ▁correl ated ▁with ▁re venue ▁growth . ▁N PS ▁has ▁been ▁widely ▁adopted ▁with ▁more ▁than ▁two ▁third s ▁of ▁Fort une ▁ 1 0 0 0 ▁companies ▁using ▁the ▁metric . ▁ ▁The ▁tool ▁a ims ▁to ▁measure ▁the ▁loyal ty ▁that ▁exists ▁between ▁a ▁provider ▁and ▁a ▁consumer . ▁The ▁provider ▁can ▁be ▁a ▁company , ▁employ er ▁or ▁any ▁other ▁entity . ▁The ▁provider ▁is ▁the ▁entity