Adele has debuted her comeback single 'Hello' and video

Adele has revealed her highly-anticipated new single.

The singer unveiled the track 'Hello' today (October 23) as the first track from her upcoming album '25'.

A video for the tune was also debuted online, and it sees Adele being reflective.

Shots of her interacting with a man are interspersed with clips of the Brit singing outside.

'Hello' is something of a comeback single for Adele, whose last album '21' was released over four years ago.

Her third record '25' will be released on November 20.

Speaking earlier this week about the new album's themes, Adele said online:

"My last record was a break-up record and if I had to label this one I would call it a make-up record. I'm making up with myself. Making up for lost time. Making up for everything I ever did and never did. But I haven't got time to hold onto the crumbs of my past like I used to. What's done is done."

Talk of Adele's return sparked to life on Sunday (October 18) when a mysterious advert featuring a clip of 'Hello' was aired during the X Factor in the UK.

Watch the 'Hello' video below: