Is this a clip from Adele's new album?

It appears that Adele has revealed a first snippet of material from her third album during a 30-second TV advert.

The clip, a voice singing accompanied by the lyrics on a black screen, was played during the X Factor on ITV in the UK on Sunday.

Adele's last album, 21, was released almost five years ago, but she's rumoured to be releasing a new one in November. Her spokesperson refused to comment on whether the clip was Adele.