In May 1997 German BMG Classic released an album where spanish opera singer Montserrat Caballe was collaborating with different artists from various genres.
Bruce Dickinson’s involvement with the record was that he received a phone call from the producer, Mike Moran (who orchestrated the horn parts for Nicko McBrain’s “Rhythm of the beast”), who asked if he was interested in singing a duet with the famous vocalist. The song written by Freddie Mercury was Queen’s “Bohemian Rhapsody”. Bruce said that he could at least try.
Listen to Bruce Dickinson Sing Queen’s Bohemian Rhapsody