Vivian Campbell, guitarist for Def Leppard, has revealed that his cancer has returned following a failed donor transplant, while also announcing the recording of new songs with Sweet Savage—the NWOBHM band he co-founded in 1979, marking their first new material in nearly 45 years. His return to music comes amid reflections on his career, including a notable audition for Dio described as a surreal experience involving heavy drug use.