Add unison to a synth to automatically add multiple voices… "instead of having just one saw-wave just buzzing, it's going to add voices, pan and de-tune them, around the stero field" – gives "stereo" feel: https://youtu.be/NJLIS2MkFe4?t=316 "and if you look down here to the ozone imager, this vectorscope [on left in screenshot] is going to help you see the stereo information change"
Aside: Yodelling is switching from your chest voice (speaking register) to your head voice (falsetto). https://youtu.be/qJT2h5uGAC0?t=456
Most male pop singers have a vocal range like a tenor:
Bad Snacks: "I linked it to my mogue module"
so when she plays the keyboard, it sounds like the sound she created...
https://youtu.be/zvKY_DnM1PA?t=288 (@4:50)
The order of effects matters. e.g., reverb then delay vs. delay first. Described at 18:20: