Euphoria is when your favorite music artist records one of your favorite songs!
I have always loved Def Leppard. They recently released a tribute album. Until I heard their version of "Rock On", I hadn't really paid it any mind.
Then I realized they had done a cover of Electric Light Orchestra's 10538 Overture.
It's not the best song ELO has ever done. But as far as songs go, it's #7 on my top list of all time favorites. It was their first hit, the first song on their first album.
And Def Leppard do it right!!!!