Classic FM synthesis combined with ROM-based sounds make this vintage digital synthesizer a true classic (albeit challenging to master). TG77 patches should also work with SY77.
Plucked sound with shimmering filter effects, drenched reverb, mid-long release, cycling hold.
Plucked sound mixed with bleating goat noise. Filter mapped to CC74. With filter frequency at minimum, sounds like a nice dark moving EP, but weirder.