Yoko Ono's name will be forever linked to John Lennon's, but the Japanese polymath's risk-taking work is her true legacy. She could rock hard without forgetting her avant-garde foundations, as in 1970's “Why,” which offers brain-scouring proto-punk laced with madcap ululations; 1980's sleeker “Kiss Kiss Kiss” is New-Wave-disco perfection capped with a spine-tingling vocal outro rooted in Dada. Across all her experiments and reinventions, she has remained not just relevant but essential: Her 2018 rendition of “Imagine” proves that even old chestnuts can be made to taste wonderfully strange.