What artist that co-founded a band with David Knopfler also played with the group Brewers Droop?
Mark Knopfler: Mark Freuder Knopfler, {'1': ", '2': ", '3': ", '4': "} (born 12 August 1949) is a British singer-songwriter, guitarist, record producer and film score composer. Mark Knopfler:  He is best known for having been the lead guitarist, lead singer and songwriter for the rock band Dire Straits, which he co-founded with his younger brother, David Knopfler, in 1977.
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