Kuokka77 | SID music: Hein Holt - Rock Sid 6581 long version (U64E real 6581 dual mono bx_🎧) @Kuokka77 | Uploaded August 2023 | Updated October 2024, 1 week ago.
"Rock Sid (long version, 6581)" by Hein Holt, 1st at Primary Star 2004 (specificly, the 8580 compo version won). Original "Rockit" (1982) by Herbie Hancock.
Art "Master Of Puppet" by The Sarge/Fairlight, 1st at Pågadata 2023.

Ultimate64 Elite real 6581 dual mono setup (identical audio for both chips, full channel separation):
Left channel: MOS 6581 0784/Korea AH054105
Right channel: MOS 6581R4 3386 S/Philippines IH312143 HC-30

Ultimate64 Elite:
ultimate64.com/Ultimate-64-Elite