Sigrid, Ellie Goulding, Calvin Harris, Halsey, Anne-Marie and Rita Ora are also on this year’s bill.
Cullum's new album is set for global release on 7 June, through Blue Note in the US and Island Records elsewhere.
With the success and acclaim befalling 'Back To Black,' America couldn’t overlook Amy any longer, and the album entered the Billboard 200 on 31 March 2007.
The track is his first new music since his Grammy-nominated, gold-certified 2015 album release, 'Currents.'
Veteran producer Salaam Remi has paired up Amy Winehouse and hip-hip icon Nas once again on his new track ‘Find My Love’.
This year's event will be held at LA's Staples Center and hosted by Alicia Keys.
The widely-hailed 'Shallow' also won Best Original Song at the 2019 Golden Globes last week.
The five Best Original Song nominees will be announced along with the rest of the Oscar nominees on 22 January.
Ronson and Cyrus also recently collaborated on Ronson’s new track ‘Nothing Breaks Like A Heart‘,
Shawn Mendes, Pink and Mark Ronson also on board for Grammy weekend salute to country legend.
'Close To Me' is the first new music from Ellie Goulding since her 2015 album 'Delirium' which saw her hit single ‘Love Me Like You Do’ viewed over 1.8 billion times.
The soundtrack album is due for release through Interscope Records on 5 October, the same day the film opens.
The release contains a bonus feature of Amy's previously unseen performance on Grammy night 2008.
Wainwright and band will be performing perform material from both 'Rufus Wainwright' (1998) and 'Poses' (2001) at these special anniversary shows.
In the forthcoming movie, Gaga also performs original songs she wrote with Cooper and the likes of Lukas Nelson, Jason Isbell and Mark Ronson.