21 (Adele album) and vocal problems led to numerous alterations to the tour itinerary. The cancellation of the North American leg of the tour was due to a vocal haemorrhage on her vocal cords. The singer underwent corrective vocal surgery in November 2011 and cancelled all public appearances until February 2012. Adele performed "Rolling in the Deep" at the 2011 ECHO Awards, 2012 Grammy Awards and 2012 BRIT Awards ceremonies. "21" yielded five singles in total, including four worldwide releases. The lead single "Rolling in the Deep" was released in November 2010, and peaked the charts in the Netherlands, Germany, Belgium, Italy, and
21 (Adele album) quarter album sales of 2012 in the United States. Without "21", the first quarter of 2012 would have been down 3.4% compared to the first quarter of 2011. "21" sold more copies in the first quarter of 2012 than any album since 2005 and is the oldest album to be the best-selling album in the first quarter of the year since No Doubt's "Tragic Kingdom" in 1997. On 28 November 2012, the Recording Industry Association of America (RIAA) certified it Diamond after having sold more than 10 million copies in the United States alone; it is the first album released