What makes Hurdy Gurdy Man by Donovan notable?

The title track 'Hurdy Gurdy Man' became one of Donovan's most recognized songs, charting in multiple countries and solidifying his status in the psychedelic movement. Its influence is evident in later artists' work, particularly within the realms of folk and rock music during the late 60s and early 70s. Released in June 1968, 'Hurdy Gurdy Man' marked Donovan's transition into a more psychedelic sound following his successful albums like 'Sunshine Superman.' At this point, he was already established as a key figure in the British folk-rock scene, yet this album showcased his exploration of mystical themes and complex arrangements.