This is actually a word that sounds like a phrase, there's a very subtle difference. The meaning of which is to describe something that has an inferior quality about it. It is essentially a derogatory phrase (..err I mean word)
"Do you like my new shirt?" "... Mate, That's-not-even-close-to-Mozart"
"I reckon this cake I made is delicious" "What are you on about? That's-not-even-close-to-Mozart"