Undervector were a band whose music was composed entirely of sounds from their home planet, and could also be made into a mathematical equation to define the output of a quantum vector. They became popular following the deaths of Palpatine and Darth Vader at the Battle of Endor. However their music wasn't to all tastes. According to Dllr Nep, "they stink like Tauntaun droppings".
- Star Wars: X-Wing Rogue Squadron: The Warrior Princess (First mentioned)