While they weren't punk, The Police certainly demonstrated that the punk spirit could have a future in pop music. As their career progressed, The Police grew considerably more adventurous, experimenting with jazz and various world musics. All the while, the band's tight delivery and mastery of the pop single kept their audience increasing, and by 1983, they were the most popular band in the world. Their 1983 album, Synchronicity, was number one on both the UK Albums Chart and the US Billboard 200 and sold over eight million copies in the US. The group disbanded in 1986 but reunited in early 2007 for a one-off world tour lasting until August 2008. The Police have sold more than 50 million albums worldwide and were the world's highest-earning musicians in 2008, thanks to their reunion tour. They continue to perform together on an irregular basis.