I am soon going to perform the song at an event. I like sticking to the melody and tempo of the song with no ad lib notes, rhythms and little vibrato. I have a few questions about the proper way to perform the piece. I read above that a singer does not need to cover their heart while performing. So, should the singer perform at attention with no arm movement? I was considering using some slight arm movement for expression and wondered if that was appropriate. I am a tenor and like to select as high a pitch for which I can comfortably sing the highest note in the song. Or, should it be sung in a certain key? Is it appropriate to change the tempo, such as slowing down near the end of the song, or should it be the same tempo throughout with perhaps only a brief stop on "free"? And can the last word be held at length, or should it end close to the original tempo? Thank you very much for this forum!