Sharp bowdlerised the songs [occasionally[ the keeper ] changing their meaning, to make them acceptable morally to victorian style standards.
It was quite different to what musicians do to their music. Sharp also fell out with Mary Neal a keen suffragette.
Sharp was more conservative in many ways and the songs he collected suffered from his conservative prudish attuitude eg [ the keeper]. But now he is on a pedestal and has a smashing pad in camden town, Almost as good as Nelson in Trafalgar Square with four lions to guard him.