Yoko Ono's exhibition "Glass Corner" is being held at Tomio Koyama Gallery. New expressions using glass.

Yoko Ono "Glass Hammer", 1967 / 2014, Glass, 22.9 × 11.4 × 1.9cm, ed. 6/ （ｃ）Yoko Ono, Courtesy of Tomio Koyama Gallery

Yoko Ono "A CLOUD SHOVEL", 1971 / 2015, Glass, Overall Dimensions: 17.8 × 17.8 × 30.5cm, ed. 6/ （ｃ）Yoko Ono, Courtesy of Tomio Koyama Gallery

Yoko Ono "A CLOUD SHOVEL", 1971 / 2015, Glass, Overall Dimensions: 17.8 × 17.8 × 30.5cm, ed. 6/ （ｃ）Yoko Ono, Courtesy of Tomio Koyama Gallery