I may be thick or something - but I think Steeleye DID re-arrange All Around My Hat into a pop song, I know it is much changed from the original unaccompanied song!!!! - As was Scarborough Fair by Paul Simon and the other guy - Didn't Simon learn it from the singing of Martin Carthy and then copywrite it?
As did Dylan with the melody of Lord Franklin that he uses for ??? oh What is the bloody song?
Yes - All Around My Hat by Steeleye was from 1975 and it reached No. 5 in UK hit parade.
Tim Radford