My understanding was that Dylan got up a lot of people's noses in the U.K Folk scene by recording their sessions and then using the melodies for the songs he wrote, of which there are numerous examples. Perhaps this is why MacColl did'nt like him. As regards Bob's singing voice, he can sing clearly and distinctly when he likes. Himself and the late Liam Clancy used have great crack where Bob would imitate Liam's voice and Liam would imitate Bob's. However, both had a great feel for what sells, and kept this to themselves.