It speaks volumes about the state of popular music in the late 60's, when a major label can release something this bizarre and expect it to sell. Outside of counting the number of times the boy's say "groovy, the "highlight" is a lame cover of "Turn Down Day" a hit single by the Cyrkle about a year before.
For collectors of cover art there is an unexpected treat. The twins are wearing Leisure Suits, and therefore in the vanguard of fashion. Everyone knows that this high fashion statement didn't hit the stores until at least 1975.