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
Gradation (album) Gradation (album) Gradation is the first compilation album by Japanese singer Shizuka Kudo. It was released on November 30, 1988, through Pony Canyon. The album includes all five singles released by Kudo at the time, from "Kindan no Telepathy" through "Mugon... Iroppoi", their coupling songs, as well as one new song, entitled "X'mas ga Ippai", recorded specifically for the compilation. "Gradation" was re-released in gold CD format on March 21, 1989. "Gradation" debuted at number two on the Oricon Albums Chart, with 182,000 units sold. The album spent fourteen weeks in the top twenty, of which nine were spent in