The Moody Blues, “Go Now.” Decca, 1964.

This tune was first (and more stirringly) recorded by Bessie Banks, but achieved cross-Atlantic fame in this English version, with its copious reverb and blue-eyed barbershop harmonies. The high-contrast promo film was one of the first made exclusively to market a single — and its rather exaggerated way of styling the band has been echoed throughout the history of the form, probably most notably in “Bohemian Rhapsody.”