The set was recorded for a documentary.

Miley Cyrus has given up smoking marijuana as she wants to be "super clear" when promoting her forthcoming album. Read more here

The two artists teamed up for the one-off performance while on solo tours in Europe. Read more here

The singer joined her ex-husband, and father of her twins Max and Emme, at his gig in New York. Read more http://www.music-news.com/news/UK/99866/Jennifer-Lopez-joins-ex-Marc-Anthony-for-surprise-duet

Lady Gaga wowed fans when she joined Elton John at a surprise gig to thank the city of West Hollywood. Read more http://www.music-news.com/news/UK/95739/Elton-John-joined-by-Lady-Gaga-in-surprise-Hollywood-gig

Kanye West adopted a Shakespearean flair to celebrate his wife Kim Kardashian’s 35th birthday. Read more http://www.music-news.com/news/UK/93060/Kanye-West-surprises-Kim-Kardashian-with-cinema-birthday-bash