James Corden will host music's biggest night in Los Angeles on 12 February.
The 59th annual Grammy Awards ceremony will be held in LA on 12 February.
Pop star given false diagnosis ahead of her appearance at the 2006 award ceremony.
Perry is expected to debut her new single at the Los Angeles awards ceremony on 12 February.
Coachella bosses were reportedly unaware their headliner was expecting.
Frank Ocean previously confirmed his boycott, describing the awards as 'dated'.
Beyonce and Adele are also expected to perform, a Grammys producer previously revealed.
Beyonce leading this year's nominations list with total of nine, while Adele has five.
West, 39, gradually returning to spotlight after receiving hospital treatment for exhaustion.
Beyonce's Lemonade is nominated for album of the year, but Rihanna did not receive a nod in this category.
Simpson, 38, nabbed a surprise nomination in top category for his album A Sailor's Guide To Earth.
Beyonce has received nine nominations followed by Adele, Drake and Justin Bieber.
James Corden will host 59th recording academy awards in Los Angeles in February.
IBTimes UK senior entertainment reporter Alicia Adejobi rounds up this week's music stories.
Singer said to want to spend more time on the Elton John Aids Foundation, sources close to him say.
Nominations for next year's music awards ceremony are set to be announced on 8 December.
Ocean did not submit his second album Blonde or visual album Endless for consideration by the Grammy board.
Grammys producer Ken Ehrlich has reportedly revealed Adele and Drake are main competitors.
Ocean released his second album Blonde and the visual album Endless through Apple Music.
Ocean's second album features uncredited guest appearances from Beyonce, Kendrick Lamar and Andre 3000.
Tong spoke at the inaugural International Music Summit College in Malta on 1 July.
Exclusive: Tedder talks to IBTimes UK about rivalry between the singers ahead of Grammys 2017.