I am not surprised as Freddie Mercury had a fantastic vocal range and IMHO and IMHO was the best male singer of the 1970s, 80s and the 1990s,

 

https://en.wikipedia.org/wiki/Montserrat_Caballé

 

Caballé is also known for her 1987 duet with Freddie Mercury, "Barcelona", recorded at the request of the International Olympic Committee for the 1992 Olympic Games. The two felt mutual admiration for each other and developed a close friendship.

 

In 1987, Caballé made a rare excursion into the world of pop music when she released a duet with Freddie Mercury, the lead singer of the rock band Queen, which was titled "Barcelona".[48] The song was inspired by Caballé's home city and later used as one of the two official theme songs for the 1992 Olympic Games.[48] Mercury was a great admirer of Caballé, considering her voice to be "the best in the world".[49] The single was followed by an album of the same name which was released the following year and featured further collaborations between the two performers. The title track later became the anthem of the 1992 Summer Olympics which was hosted by Caballé's native city, and appeared again in the pop music charts throughout Europe. Caballé also performed the song live, accompanied by a recording by Mercury, who had died in 1991, before the 1999 UEFA Champions League football final in Barcelona's Camp Nou stadium.

 

A very rare and very successful meeting between pop music and opera.

Never thought much of them.

I always preferred the Beatles over the Rolling Stones and I still do.