Cancion y Danza No. 6 was a piece of Earth classical music from the 20th century composed by Frederic Mompou.
The piece was performed during Deanna Troi's and William T. Riker's wedding ceremony in Alaska in 2379. (Star Trek Nemesis)
Cancion y Danza No. 6 was part of a collection of fifteen pieces created between 1918 and 1972. The version of Cancion y Danza No. 6 used in Star Trek Nemesis was performed by renowned, Grammy Award-winning Spanish pianist Alicia de Larrocha.