Cowbell
This is how you would make a cowbell on a traditional single oscillator subtractive synth.
Tune VCO-A to G5
Set the filter to self resonate, then tune the filter frequencey to C5.
Try it with VCF BP2 and BP4.
Further Reading:
Sound On Sound, Synth Secrets: Synthesizing Bells
Sound On Sound, Synth Secrets: Synthesizing Cowbells & Claves