Emotion when singing mary had a little lamb

My emotion when singing the song,"MARY HAD A LITTLE LAMB'
with a happy tone is very uplifting and while singing, the
pitch is higher.
My emotion for singing it with a sad tone, there is a
feeling of loneliness and the pitch is much more lower.
And finally, my emotion for singing it in a frighten tone
is eerie and spooky.

Label:Yi Ru