There are several bands by the name of Sugar:
(1) Project of former Hüsker Dü member Bob Mould.
(2) is a Korean girl-pop group with releases in Japan and Korea
(3) is a Japanese visual-kei group (Ｓｕｇａｒ)
(4) is Australian psy-trance producer / artist Felix Hamer, on the Green Ant label from Melbourne, Australia.
(5) is a rockband from Den Bosch The Netherlands. Sugar (1) was formed by Bob Mould after the breakup of Hüsker Dü, and conceived as having a similar sound, though with Mould as the sole leader