Question: What great artist that Natalia Troitskaya sang with, did a duet with Freddie Mercury that became one of the two official theme songs for the 1992 Olympics?
Sentence (from "Montserrat Caballé"): She came to the attention of a much wider audience when she recorded at the request of the IOC in 1987 "Barcelona", a duet with Freddie Mercury, the lead singer of the British rock band Queen; the song was inspired by Caballé´s home city, later it was used as one of the two official theme songs for the 1992 Olympic Games.
Relevant evidence: Yes