Lou Reed's lost Velvet Underground song has surfaced online and is set to be released.

'I'm Not A Young Man Anymore' was a live track co-curated by Velvet Underground musicians John Cale and Lou Reed, prior to the latter's death on October 27, following a transplant operation in May.

Next month Universal Music will reissue The Velvet Underground's 1968 album 'White Light/ White Heat' with 'I'm Not A Young Man Anymore' being one of the tracks on the three disc release.

The 30-track collection includes mono and stereo versions of the album plus bonus material, including new mixes.

Recorded at New York venue The Gymnasium on April 30, 1967, the live version of the missing song is rumoured to be the only time the band played the track at a gig.

Written by Lou Reed, it was never officially released by the band nor does it appear on any other live bootlegs.

Lou Reed's death leaves John Cale and drummer Moe Tucker as the only surviving members of The Velvet Underground who were managed by Andy Warhol at his New York City studio The Factory in the 60's and 70's.

In 2004, Rolling Stone ranked the band number 19 on its list of the '100 Greatest Artists of All Time'.

The lost track 'I'm Not A Young Man Anymore' will be available from December 3.