Lady Gaga felt "uncomfortable" paying tribute to David Bowie at the Grammy Awards.

Lady Gaga

Lady Gaga

The 30-year-old pop star performed a heartfelt medley of the late singer's hits at the awards show back in February, but has admitted she didn't want to do it when she was first asked, because it was "so soon" after the 'Jean Genie' star's death from cancer in January.

She said: "I really did not want to do it when they first called me because it was so soon after [Bowie's death] and I felt very uncomfortable, but I did my very best to put together something that I hoped would be the showstopper of the night."

The tribute hailed mixed reviews, not least from Duncan Jones - the only son of the 'Space Oddity' hitmaker - who posted a cryptic tweet after the performance in which he seemed to call Gaga "mentally confused".

Duncan, 45, wrote: ""overexcited or irrational, typically as a result of infatuation or excessive enthusiasm; mentally confused." Damn it! What IS that word!? (sic)"

The tweet was actually comprised of the Oxford English Dictionary's definition of the word 'gaga'.

Speaking in the latest issue of NME Magazine, the 'Perfect Illusion' singer admits that the comments by the BAFTA-winning filmmaker "hurt" her.

She told the publication: "Yeah. It did. It did hurt. But what are you going to do? I can't... it's his father, you know?"

But the Bowie tribute almost didn't happen at all, as the 'Bad Romance' singer - who has recently released her new album 'Joanne' - revealed she almost quit the music industry after 2013's 'Artpop'.

She said: I was just having a really depressed time in my life where wasn't able to see my own ability or my own talent.

"And when you lose grasp of those sorts of things, you can just spiral.

"But you know, to the world 'quitting music' means one thing and to me its means another. I meant to giving putting out music, as opposed to just doing it for myself, which what makes me really and truly happy."