, ▁festiv als ▁and ▁radio ▁shows . ▁He ▁played ▁as ▁a ▁du o ▁with ▁fellow ▁But ter field ▁bands man ▁Mike ▁Blo om field . ▁He ▁also ▁in ▁a ▁band ▁( most ▁often ▁called ▁Mike ▁Blo om field ▁& ▁Fri ends ) ▁from ▁the ▁late ▁ 1 9 6 0 s ▁through ▁the ▁mid - 1 9 7 0 s . ▁He ▁hosted ▁Mark ▁N aft alin ' s ▁Blue ▁Monday ▁Party , ▁a ▁week ly ▁bl ues ▁show ▁( 1 9 7 9 - 1 9 8 3 ) ▁that ▁featured ▁over ▁ 6 0 ▁bl ues ▁artists ▁and ▁groups ▁and ▁was ▁the ▁scene ▁of ▁ 8 6 ▁live ▁radio ▁broadcast s ▁and ▁three ▁TV ▁spe ci als . ▁ ▁N aft alin ▁has ▁produced ▁the ▁Mar in ▁County ▁Blues ▁Festival ▁( 1 9 8 1 - 2 0 0 0 ), ▁and ▁has ▁been ▁the ▁associate ▁producer ▁of ▁the ▁Mon ter ey ▁Jazz ▁Festival ' s ▁" Bl ues ▁Af ternoon " ▁( 1 9 8 2 - 1 9 9 1 ). ▁His ▁week ly ▁radio ▁show , ▁Mark ▁N aft alin ' s ▁Blues ▁Power ▁H our ▁ ▁has ▁been ▁on ▁the ▁air ▁almost ▁continu ously ▁since ▁ 1 9 7 9 ▁on ▁San ▁Francisco ' s ▁radio ▁K AL W - FM . ▁ ▁N aft alin ▁co - f ounded ▁the ▁Blue ▁Monday ▁Foundation ▁and , ▁in ▁ 1 9 8 8 , ▁started ▁his ▁own ▁label , ▁W inner ▁Records , ▁which ▁has ▁issued ▁record ings