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.
Very raw aggressive mono bass. Sharp attack, quick release. Almost square wave sounding. Bright resonant filter mapped to CC74.
Slower attack, mellow with an emerging resonant overtone. Filter mapped to CC74.
Bright sawtooth sounding FM. Analog’ish with low filter cutoff. Assigned to CC74.
Plucked sound with shimmering filter effects, drenched reverb, mid-long release, cycling hold.