Following the success of "Hybrid Theory" and "Reanimation", Linkin Park spent a significant amount of time touring around the United States. The band members began to work on new material amidst their saturated schedule, spending a sliver of their free time in their tour bus' studio. The band officially announced the production of a new studio album in December 2002, revealing their new work was inspired by the rocky region of Meteora in Greece, where numerous monasteries have been built on top of the rocks. "Meteora" features a mixture of the band's nu metal and rap metal style with newer innovative effects, including the induction of a shakuhachi (a Japanese flute made of bamboo) and other instruments. Linkin Park's second album debuted on March 25, 2003 and instantly earned worldwide recognition, going to No. 1 in the US and UK, and No. 2 in Australia.