Once again Harper collaborated with David Gilmour and Kate Bush on his 1990 release , '' Once '' . The album also featured contributions from Nigel Mazlyn Jones , Mark Feltham and Tony Franklin . One of the album tracks , " The Black Cloud of Islam " a song written about Colonel Gaddafi , the Lockerbie bombing , and a despairing castigation of radical Islam , provoked criticism from some of Harper 's fans at the time . Whilst religion , Harper 's " first and only enemy " has always been a recurring theme in his music , he was ' red-carded by a lot of his 1990 following ... who left in substantial numbers '
the Lockerbie bombing
Pan Am Flight 103
Roy Harper (singer)