The classic setting for organ is “C3” but you’ll find other settings useful on a variety of instruments. Some of our favorites include:
Many electric pianos feature built-in vibrato. But if the sound you’re using doesn’t provide a realistic vibrato (perhaps you’re wrestling with a sampler), track dry and apply the effect later.
A certain popular guitar amp has a knob that says “Vibrato” but it’s really just Tremolo. Tremolo is amplitude modulation; the sound gets louder and quieter. Vibrato, in contrast, imparts pitch change. A select few highly sought after ‘50s Magnatone guitar amps feature a true tube vibrato (one even does stereo!) You can approximate this sound by recording guitar direct (or starting with a clean miked sound), applying Voce Chorus/Vibrato, then using SansAmp
™ PSA-1.