In 1997, Brightman released the album "Timeless/Time to Say Goodbye". It remains as Brightman's biggest-selling album. It went gold, platinum and/or multi-platinum in 21 countries, selling over 1.4 million copies in the US alone, and topped the "Billboard" Top Classical Crossover Albums chart in the US for 35 weeks. The lead single from the album, "Time to Say Goodbye", was the second song that Brightman debuted at the World Boxing Championship in Germany. This duet with tenor Andrea Bocelli became an international hit and sold more than 3 million copies in Germany alone, became Germany's best-selling single, and was successful in numerous other countries; the album eventually sold over 12 million copies worldwide.