What makes Holy Holy by David Bowie notable?

'Holy Holy' is significant for its exploration of spiritual themes within the glam rock genre and became a notable part of Bowie's live performances. Although it did not achieve significant chart success, it has been critically recognized for its artistic ambition and influence on subsequent artists exploring similar themes in their work. Released on January 15, 1971, 'Holy Holy' came shortly after David Bowie's breakthrough album 'The Man Who Sold the World.' At this point in his career, Bowie was transitioning from his early folk influences to the more glam and theatrical sounds that would define his next phase. The single was part of a crucial period where Bowie was solidifying his identity as an innovative artist.