 Since Caballé covers the soprano part, Mercury sings in his natural baritone voice rather than the forced tenor that was common in his other recordings.The song has been described as a rare textbook example of a combination of pop and opera singing which accentuated their differences.Whereas Mercury articulates his every word, Caballé focuses on the tone; her lines are much harder to comprehend, and further, she uses both English and Spanish languages.