Dies irae remix (AMY-inspired) - simulated Atari AMY chip

"Dies irae" from Mozart's Requiem (K. 626), remixed for the Atari 7800: the hammering choir as a C64-style chiptune, "Quantus tremor" as a riser, the main theme as a half-time dubstep drop, then back to the chiptune for the end. Played from the public-domain score: every pitch, chord and bass note comes from the Mutopia Project engraving of the 1877 Breitkopf & Haertel edition (Mozart, completed by Suessmayr). The drums, the wobble and growl rhythms and every sound are ours. This version: AMY-inspired. Simulated from published specs: AMY is the additive synthesis chip (every sound built from sine-wave harmonics) that Atari's research lab designed in 1983-84 and never sold, and this is not a recording of a real AMY chip. It is our model of Atari's 1983-84 AMY documents, a guess at what the remix might have sounded like on AMY. AMY was meant for Atari's computers, not the 7800, so this is a what-if. How AMY works and how the model was built:    • AMY: the Atari Sound Chip Made of Sine Wav...   Sound: an AMY model, eight voices sharing 64 sine-wave harmonics, with the harmonics as the filter: a riser whose harmonics open one by one, a wobble whose spectrum breathes, a "yoy" formant growl, and a real four-part choir for every chord and the shout. Key and tempo: D minor, 180 bpm; the drop at 150 bpm, half-time. Length: 2:30. The same remix comes in four versions, each built for its chip: Dual POKEY, TIA, Minnie-style and AMY-inspired. The picture is a PC redraw of the "7800 Music" jukebox screen, its spectrum computed from the audio: no 7800 ROM can play this version, because the chip never went into production. Sound leveled to -14 LUFS. The video starts with the Abysmal Games logo and its sound. Music by Abysmal Games, from Mozart's Requiem https://www.abysmal-games.com/ #Atari7800 #chiptune #AMY #Mozart #8bit