The program for that is “Melodyne” (by Celemony). Prices from around €99 to €699.
As you might guess from the prices, this is difficult technology that has required years of development investment.
Probably not.
The manufacturer recommends either using it as a standalone application, or as a plug-in with:
Apple Logic Pro X, Steinberg Cubase, Steinberg Nuendo, Presonus Studio One, Bandlab Cakewalk, Magix Samplitude, Cockos Reaper, Acoustica Mixcraft or Tracktion Waveform.
Change the Algorithm to “Pitch” and Window Size to 1024.
Now on your track, you’ll see a little arrow dropdown. click that and select “spectrogram”.
make your track taller so you can see things better. If the lines are really faint, then normalize the track. They will become more visible.
Now you have your vocal track displayed in “pitch” form.
Do you get a little keyboard on the side? no. Can someone write a plugin for this? I imagine somebody could figure out how to stick a keyboard on the side of it. Has somebody already done that? IDK i’m new at this myself!