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.
Bright sawtooth sounding FM. Analog’ish with low filter cutoff. Assigned to CC74.
A somewhat analog sounding patch that reminds me of the theme song from Mutual of Omaha’s Wild Kingdom.