It was their biggest hit [1] and stayed 11 weeks in the Belgian top 30 chart, reaching fifth place as its highest position.

[2][3] The song opens with the sound of galloping horses, which was an idea of Pebbles singer Fred Bekky.

[2] The psychedelic lyrics describe seven purple horses racing in a green pouring sky.

The song was written by Fred Bekky and Bob Bobott, both the singers and guitarists of the band.

[4] It was released on single, with the song To the Rising Sun as its B-side, or The Verger on the French and Canadian editions.