These variations are named after the colours of the "Spectrum". Violet being changed to purple. It was written for the 1968 National Championships of Great Britian, but only played in 1969 because "Vinter's" John 'O' Gaunt had already been picked for the 1968 British Open. Still a firm favourite though. It was also the 'B' Grade Test Piece for the 2009 National Championships of New Zealand.
Published by Studio Music