The Damnation of Faust was a 19th century opera by Hector Berlioz.
In a vision experienced by B'Elanna Torres in 2376, The Doctor informed her that he would be performing an aria from Faust on the holodeck. (VOY: "Barge of the Dead")
The play was "based on the legend of Dr. Johannes Faustes, a 16th-century German physician who sold his soul to the devil." This information was from the Star Trek Encyclopedia, 4th ed., vol. 1, p. 262, where the opera was identified by its French title "La Damnation de Faust".