M.I.A. has posted a new, previously-unreleased track, '27', on Soundcloud in memory of the late Amy Winehouse.

Writing on Twitter, the London-born artist said "i recorded this song B4 vickileekx and never put it out. its a unfinished demo. R.I.P A.M.Y."

Listen to it below.

27 by _M_I_A_