2010 using Sibelius and Preview. "50sprogression" inC major, repeating, ending on C. See: [[:File:50sprogressioninC.mid]] {{GFDL-self|migration=relicense}}
Hyacinth (talk) 04:03, 17 November 2010 using Sibelius 5. See: Image:50sprogressioninC.png Hyacinth at the English-language Wikipedia, the copyright holder
Hyacinth (talk) 04:02, 17 November 2010 using Sibelius 5. See: Image:50sprogressioninC.png Hyacinth at the English-language Wikipedia, the copyright holder