Clearly an attempt to cash in on the cool stripped-down sound of late 60's instrumental groups like The Brass Ring.
Why? Well, because the group's called "Ring Of Sound", and because the model on the cover is sitting on a Merry Go Round horse, holding a brass ring on the flesh of her left thigh, right below the very short hemline of her dress.
Not that that's a problem, though, because the sound is very groovy, very much like the Brass Ring, with cool covers of pop tracks done by a "modern" group that has lots of organ, electric guitars, saxes, and a good tight sound. Cuts include "Mas Que Nada", "Turn Down Day", "Where Is Your Laughter", "Sign Of The Times", and "Ring Of Sound".