The siren scream by JMC LAB

aggressive scream huge fat sound

Adjust VCF freq to maximize resonance. Tune the 2 oscillators a perfect major third apart. Adjust delay repeat so it barely self-oscillates but ultimately stays quiet.

LFO shape and slew rate will modulate the "scream". Put delay repeats to the maximum for a horrific death scream when the note ends.

Noise and attn 1 can provide more or less unstable screams.