A clip of Amy Winehouse recording her iconic Back To Black has surfaced online, coinciding with the release of the new AMY documentary.

The 3-minute clip, caught by chance by the track’s producer Mark Ronson, further exemplifies Winehouse’s might as a powerful recording artist, hearing her belt the song with what seems like relative ease.

Hit the play button at the top of this post to watch in full – AMY is out now in cinemas across the UK and Ireland.