Williamson also recorded a solo album, "Myrrh", which featured some of his most extraordinary vocal performances. The group's changing lineup, adding Stan Schnier (aka "Stan Lee") on bass, Jack Ingram on drums, and Graham Forbes on electric guitar reflected moves toward a more conventional amplified rock group. Their final albums for Island were received disappointingly, and the label dropped them in 1974. By then, disagreements between Williamson and Heron about musical policy had become irreconcilable, and they split up in October 1974. Williamson soon formed Robin Williamson and His Merry Band, which toured and released three albums of eclectic music with a Celtic emphasis. Within a few years, he went on to a solo career, moving between traditional Celtic styles and more avant-garde material. He also produced several recordings of humorous stories. In all, Williamson released over forty albums post-ISB. Notable in this output are the Grammy-nominated "Wheel of Fortune" (1995, with John Renbourn) and four records on the jazz/classical/avant-garde ECM label: "The Seed-at-Zero" (2000), "Skirting the River Road" (2002), "The Iron Stone" (2006), and "Trusting in the Rising Light" (2014). Heron formed a rock group with Malcolm Le Maistre, called first Mike Heron's Reputation, then just Heron, and later released occasional solo albums. Malcolm Le Maistre continued teaching in schools and performing theatre and music, and he released two albums. In 1997, Williamson and Heron got back together for two concerts, which were warmly received. This was followed by a full reunion of the original three members plus Williamson's wife, Bina, and Lawson Dando in 1999. However, they did not recapture the high reputation of the original ISB, playing mostly small venues to mixed critical and audience responses. In March 2003 it was announced that Robin and Bina Williamson had "temporarily" left to pursue other projects and their solo careers. Rumours circulated of an acrimonious split. A long-standing agreement between Williamson and Heron that neither would use the name 'Incredible String Band' without the other's involvement was bypassed by a temporary re-branding as 'incrediblestringband2003'. Heron, Palmer and Dando, and new member Claire "Fluff" Smith, continued to tour regularly around the United Kingdom and internationally. Heron, Dando and Palmer toured the US in 2004.