The band were happy to have Frusciante rejoin, but it was a while before they began making songs again. This was because he had sold all of his guitars for money to buy drugs. It also took him a while to get used to playing music as part of a band again. The band released their seventh album, "Californication", in 1999. It had fewer songs based on rap and funk than their previous albums. The album focused more on melodic guitar riffs. "Californication" was very popular. It sold over 15 million copies. Three of the singles on the album, "Scar Tissue", "Otherside", and "Californication", reached number one on the Modern Rock Tracks chart.