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
David Cook (singer) David Cook (singer) David Roland Cook (born December 20, 1982) is an American rock singer-songwriter, who rose to fame after winning the seventh season of "American Idol" in 2008. Prior to "Idol" he released an independent album entitled "Analog Heart". This was followed by his post-"Idol" major-label debut "David Cook" which was released on November 18, 2008, and has since been certified platinum by the RIAA. His second major album "This Loud Morning" was released on June 28, 2011. His third post "American Idol" and fourth overall studio album "Digital Vein" was released on September 18, 2015. Cook was born