How can I do this "vibrato" sound on a keyboard piano like at the start of "Minor" by Gracie Abrams?
3 Answers
What you call vibrato is usually referred to as “tremolo”. It is an effect where the volume oscillates.
Many electronic keyboards have this as one of the available built-in effects. It is also standard with most Digital Audio Workstation software. And plenty of choice in tremolo stomp-box effect pedals too.
The keyboard in the song you mention seems to be a Wurlitzer sound. To illustrate: Here is a sample Wurlitzer (imitation) sound with tremolo effect.
https://www.dropbox.com/s/5p72st0lll5rmu9/wurlitzer_with_tremolo.mp3?dl=0
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2Thanks for putting me straight on my now-deleted answer. I confused Rhodes with Wurlitzer.– AaronCommented Apr 18, 2022 at 20:23
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Come to think of it, the Hammond B3 was also famous for it's vibrato, yes?– AaronCommented Apr 18, 2022 at 21:05
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That one is a varying frequency vibrato (or actually varying phase, to be more precise). Anyway, not the topic of the question. Commented Apr 18, 2022 at 21:20
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1@Aaron - Hammond B3 (and others) use the Leslie effect - quite complex in actuality, using rotating speaker baffle and horn. Sort of mi of vib and trem. Might be worh a question!– TimCommented Apr 19, 2022 at 6:40
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2The Hammond organ has a Vibrato setting that's independent of the Leslie. Google for Hammond Vibrato Scanner. Brilliant concept! Commented Apr 19, 2022 at 14:35
Some keyboards have a dedicated pitch oscillator on the far left side. If you're playing on a regular piano, it will not be possible.
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1
You can play a note and then the same note one octave up, alternating fast. Or you can play the note and the next fifth, also alternating fast. It will sound like a tremolo.
There is a video demonstrating the effect (The author demonstrates the technique at around 1:45).
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1I agree that it could be called tremolo but it doesn't sound anything like the song the question was about.– ojsCommented Apr 19, 2022 at 20:41