The Barcelona-born singer
achieved international acclaim in 1965 when she stepped in for another performer in the notoriously difficult role of Lucrezia Borgia in Donizetti’s opera in New York. Her debut went down in opera history as one of the greatest overnight successes and she went on to tour the world in a career that spanned half a century.
The song Barcelona was first released in 1987 and featured at the Olympic Games in 1992, the year after Mercury died.
In December 2015, Caballé was given a six-month suspended jail term and fined more than €250,000 (£180,000) for tax evasion.
She was placed under investigation in 2014, accused of channelling earnings through a company in Andorra when she lived in Barcelona and thus defrauding tax authorities of €500,000, which she subsequently paid.