Festive 'Symphony of British Music' spectacle focuses on U.K.'s main cultural export
Rapper hopes to collaborate with the artist on his next album
Singer's ninth record is titled '50 Words for Snow'
Singer has rerecorded 'The Sensual World' with Joyce's words as originally planned
New album will feature reworked versions of tracks from 'The Sensual World' and 'The Red Shoes'
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The singer-songwriter-producer keeps a tight lid on her 'emotional process'