Ozzy Osbourne has been remembered as a “pioneer,” a “fearless talent” and a “dear friend,” in an outpouring of tributes from fellow musicians and his former Black Sabbath bandmates following his death on Tuesday at the age of 76.

Osbourne died on Tuesday at 76, just weeks after he and Black Sabbath performed at their farewell Back to the Beginning concert earlier in July.

Ozzy Osbourne’s sisters are grieving the loss of their beloved brother. Jean Powell and Gillian Hemming opened up to The Mirror about their sibling, whose real name was John Michael Osbourne, and spoke about the last time they saw and talked to him.