Riddle

Very late because I cooked pancakes for Andrew. It is nice to have Andrew for a visit. No one got the riddle right so guess them again. Lee got the brain Bruiser question right.

Brain Bruiser
I cannot be felt, seen, or touched; yet I can be found in everyone. My existence is always in debate; yet I have my own style of music. What am I?

SOUL

Riddle
How is a crossword puzzle like an argument?

What word starts with E and has only one letter in it?