Singer Sam Smith has been in agony the last couple of days as he has a throat infection which feels as though he has a tennis ball lodged in his throat.

The ‘Writing’s On The Wall’ singer has been struck down with the illness and has been left in agony with his swollen glands, reports femalefirst.co.uk.

In an Instagram post, he revealed: "Feeling very sorry for myself. Throat Glands are so fucking big. Feel like I have a tennis ball down my throat (sic)".

Despite his illness, Smith was able to unveil a cover of Amy Winehouse’s ‘Love Is A Losing Game’ taken from ‘In The Lonely Hour: The Drowning Shadows Edition’, the new special edition of his debut album – on Thursday night.

Discussing his decision to record the cover on BBC Radio 1 and his love of the late artist, he said: "I saw the film recently and, sometimes, people forget my age. I was 11 years old when ‘Frank’ came out and that album has really shaped me as an artist and my views on music and my relationship with music, lyrically. Seeing that film brought me back to that moment of being 11 years old – her rawness on such beautiful chords, on such expensive chords."