Journey to the Centre of the Earth (album) earned Wakeman a nomination for an Ivor Novello Award and a Grammy Award for Best Pop Instrumental Performance. In 1999, Wakeman released a sequel album "Return to the Centre of the Earth". After the original score was presumed lost, Wakeman was reunited with it in 2009 and re-recorded the album three years later with 18 minutes of music previously cut due to time constraints. By mid-1973, Wakeman had been with the progressive rock band Yes for almost two years, and he had released his debut solo effort, "The Six Wives of Henry VIII", to critical acclaim. For his next release
Their Greatest Hits (1971–1975) platinum by the RIAA for 38 million units consumed in the United States under the new system that tallies album and track sales as well as streams. "Their Greatest Hits (1971–1975)" became the highest-certified album by the RIAA, surpassing Michael Jackson's "Thriller" which is certified 33x multi-platinum. Worldwide, the album has sold over 42 million copies as of 2011. As with their previous album "One of These Nights", the original vinyl editions feature "Happy New Year, Glyn" and "With Love from Bill" written into the inner dead wax on Sides One and Two, respectively. Eagles Production Their Greatest Hits (1971–1975)