Bieber's debut single, "One Time", was released in 2009 and peaked in the top ten in Canada and charted in the top thirty in several international markets. His debut release, My World, followed in November 2009, and was later certified platinum in the United States. He became the first artist to have seven songs from a debut album chart on the Billboard Hot 100. Bieber's first full studio release, My World 2.0, was released in March 2010 and debuted at number one and within the top ten of several countries, and was certified platinum in the United States. It was preceded by the worldwide top-ten single, "Baby". The music video of "Baby" is currently ranked as the most viewed and most discussed YouTube video. Bieber followed-up the release of his debut album with his first headlining tour, the My World Tour, the remix albums My Worlds Acoustic and Never Say Never – The Remixes, and the 3D biopic-concert film Justin Bieber: Never Say Never – which had an opening weekend gross that nearly matched the record for the biggest opening weekend for a concert-film.
