‘Listen to the sound of the earth turning,’ wrote Yoko Ono in Earth Piece – one of many similar suggestions in Grapefruit (1964), her book of conceptual ‘instruction pieces’. During the course of the Earth’s next series of 365 rotations, Tate Modern is home to ‘Yoko Ono: Music of the Mind’ (15 February–1 September). The retrospective includes works from all seven decades of the artist’s career
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