Music
Rex Features
The pair will join forces for a performance of Morrison's new single 'Broken Strings'.
The recorded version of the song, taken from Morrison's album Songs For You, Truths For Me, features the vocals of Nelly Furtado, with Buchanan making a special one-off appearance for the charity event.
Last month, the Sugababes teamed up with Taoi Cruz for a performance of 'She's Like A Star' at the MOBO Awards.
Morrison releases 'Broken Strings' on December 8.
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