Robertson and the Formerly Known Bullfrog, Robertson and the Formerly Known Bullfrog Robertson and the Formerly Known Bullfrog is the brainchild of singer/guitarist Mark Robertson, multiinstrumentalist, producer, and main instigator for Montreal's internationally acclaimed pop band - Bullfrog; which gave us Kid Koala. Steeped in funk, heavily rooted in old school R&B; cool and smooth jazz and soul; Mark Robertson has toured internationally as Bullfrog (Rope-a-Dope/WEA), with Kid Koala (Ninja Tunes), and as bassist for Money Mark/Beastie Boys and with his own solo show. Mark Robertson has been turning heads as a solo artist; headlining clubs and festivals all over North America and Europe; sharing the stage with big names like Marcus Miller, Manu Katche, Kesiah Jones, Vernon Reid, DJ Logic, and opening for artists like: Maceo Parker, The Wailers, Yael Naim, Charlie Winston, Micheal Franti & Spearhead, M.M.W., Soulive, Blue Rodeo, Bran Van 3000, Belleruche, Kid Koala, Money Mark, Martha Highs, Nneka and so many more.