ir , ▁which ▁later ▁became ▁The ▁Both y ▁Band . ▁ ▁Mac M ah on ▁enjoyed ▁a ▁long ▁career ▁with ▁R T É , ▁first ▁as ▁a ▁present er ▁of ▁traditional - music ▁TV ▁program mes , ▁then ▁as ▁a ▁radio ▁producer ▁( he ▁initi ated ▁the ▁long - running ▁programme ▁The ▁Long ▁Note ), ▁and ▁returning ▁to ▁television ▁with ▁The ▁P ure ▁Drop ▁and ▁Come ▁West ▁Al ong ▁the ▁Road . ▁The ▁Green ▁Lin net ▁was ▁a ▁ 1 9 7 9 ▁television ▁series ▁document ing ▁ ▁Mac M ah on ' s ▁travel s ▁through ▁Western ▁Europe ▁with ▁ban jo ist ▁Bar ney ▁McK en na ▁in ▁a ▁green ▁Cit ro ën ▁ 2 CV ▁van ▁( nick named ▁The ▁Green ▁Lin net ). ▁Mac M ah on ▁retired ▁from ▁R T É ▁in ▁ 1 9 9 8 . ▁ ▁Mac M ah on ▁has ▁frequently ▁vo iced ▁strong ▁criticism ▁of ▁modern ▁tr ends ▁in ▁the ▁performance ▁of ▁Irish ▁traditional ▁music , ▁and ▁of ▁growing ▁commercial ism ▁in ▁particular . ▁ ▁His ▁address ▁to ▁the ▁ 1 9 9 6 ▁Cross ro ads ▁Conference ▁provides ▁a ▁summary ▁of ▁his ▁views . ▁ ▁In ▁ 2 0 1 4 ▁Mac M ah on ▁announced ▁that ▁he ▁was ▁unable ▁to ▁continue ▁public ▁performances ▁as ▁a ▁result ▁of ▁Park inson ' s ▁disease . ▁However , ▁in ▁a ▁November ▁ 2 0 1 5 ▁interview ▁on ▁R T É ▁radio , ▁Mac M ah on ▁stated ▁that ▁after ▁further ▁tests , ▁the ▁diagn