Although redeemed, Tempest Shadow was known for many things: commanding the Storm King's armies, spearheading the attacks of various nations, and generally just being a real jerk.
What she wasn't known for, however, was that she could actually play the piano...
It is highly recommended to listen to the music (URL provided) while reading the description of Tempest's performance, colored blue.
Why did I read this in Paul McCartney's voice?