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
Ben (South Korean singer) recorded a duet with Xia Junsu for his fourth album, Xignature, entitled "Sweet Melody", sang "Misty Road" composed by Jinyoung of B1A4 for "Love in the Moonlight" and in 2017, she sang "Memory", one of the OSTs for "Introverted Boss". Ben (South Korean singer) Lee Eun-young (born July 30, 1991), better known by her stage name Ben, is a South Korean singer. She was a member of South Korean band from 2010 to 2011. In October 2012, she released her first album, "147.5", as a solo vocalist, a compilation of sad ballads with string arrangements and piano, with the title