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
Wendy (singer) new AI voice assistant speaker, 'Holobox'. In July 2018, Wendy collaborated with Yang Da-il for the single "One Summer" which was released on July 2. In October, it was announced that Wendy is set to release an English duet with American singer John Legend entitled "Written in the Stars" as part of the third season of "SM Station", "Station x 0" which will be Wendy's sixth time to participate in the project. In November 2018, Wendy released the song "Goodbye" for the soundtrack of JTBC drama "The Beauty Inside". Wendy (singer) Shon Seung-wan (born February 21, 1994), known professionally as