In 1973 Roger Glover left Deep Purple because of work pressure and tensions between him and Ritchie Blackmore. Together with Jon Lord he worked on a solo project. Their plan was to make a rock opera based on William Plomer and Alan Aldridge's picture book The Butterfly Ball and the Grasshopper's Feast (1973), in itself based on the eponymous poem by British historian William Roscoe (1802).[2] However, because Lord was too busy with Deep Purple, Glover decided to make it into a concept album recorded by himself and musicians like Glenn Hughes, David Coverdale, John Lawton and Ronnie James Dio. The resulting album was titled The Butterfly Ball and the Grasshopper's Feast.[1]

"Love Is All" is a 1974 pop song, credited to Roger Glover & Guests in the credits, but in reality sung by American heavy metal singer Ronnie James Dio. It was featured on Glover's solo album The Butterfly Ball and the Grasshopper's Feast and the single – released in the UK on 8 November 1974 – was a number one-hit in the Netherlands and Belgium.

https://en.wikipedia.org/wiki/Love_Is_All_(Roger_Glover_song)

Roger Glover And Guests - Love Is All [03:08 | Pop, Rock, Art Rock, Symphonic Rock, Folk Rock, Pop-Rock] https://youtu.be/BR6pYICqZT0

The song came with an animated music video featuring a lute playing frog gathering animals in the forest for the upcoming ball.[2] The animation was created by the Halas and Batchelor studio[1] and one of the animators was Harold Whitaker.[2] The video received a lot of airplay over the decades, particularly as a fill-in during technical difficulties, such as on the French TV channel Antenne 2, and in the United States in children's TV programs such as The Great Space Coaster and Nickelodeon morning shows.[1] Those random airings, together with the psychedelic tone of the clip and the lack of subtitles, made it very popular amongst young viewers.