Original: Hybrid Theory was a massive commercial success ; it sold more than 4.8 million copies during its debut year , earning it the status of best-selling album of 2001 , while singles such as '' Crawling '' and '' One Step Closer '' established themselves as staples among alternative rock radio play lists during the year .
Simplified: It sold 4.8 million copies in the first year , most of these were in 2001 . The singles of the album are '' One Step Closer '' , '' Crawling '' , '' Papercut '' and '' In the End '' which made the band famous .