What makes Heaven Knows by Robert Plant notable?

'Heaven Knows' reached No. 38 on the Billboard Hot 100, showcasing Plant's ability to remain relevant in the changing musical landscape of the late '80s. The song's blend of rock and pop elements helped it become a staple on radio playlists, further solidifying Plant's solo career after his time with Led Zeppelin. Released on January 18, 1988, 'Heaven Knows' was Robert Plant's first single from his third solo album, 'Now and Zen'. This period marked a transition for Plant as he sought to redefine his sound post-Led Zeppelin, moving toward a more accessible rock style with influences from world music.