An argument
My wife is a classically trained pianist and I play guitar by watching YouTube instructional videos. She knows her stuff and I don’t. Recently we argued whether E# and B# exist. I said no and showed her the fretboard. She said yes and showed me the keys. And said something like F is E#. I suspect she’s right bc she’s had music lessons. Tell me, fellow guitarists, do we have E# and B#?