Rolf R Bakke | C64 Rob Hubbard's International Karate oscilloscope view @RolfRBakke | Uploaded November 2014 | Updated October 2024, 9 hours ago.
Found a player that solos the voices correctly (java SIDplay2), so all synchronization and ring modulation effects are visible. I also wrote a program to draw the wave forms instead of filming my oscilloscope! :)