The Beatles‘ “Penny Lane” b/w “Strawberry Fields Forever” single is rightfully acknowledged as one of the finest pairings of songs ever committed to 7 inches of vinyl. What’s less often acknowledged is the band’s landmark display of facial hair, as presented on the promotional films for each song. Although rock facial hair had already been in bloom in the rock underground, John, Paul, George, and Ringo busted out an astounding array of complimentary moustaches (and one Van Dyke) to support their dazzling new sonic achievements. Paul will forever get his share of grief for being the most ambitious and glib of the Fab Four to reach old age, but along with all the praise due to his musical abilities, let’s not forget to recognize the perfection of the man Sgt. Pepper’s-era ‘stache.

While The Beatles were experimenting with mind-expanding sounds and drugs – and fashion-expanding facial hair – The Rolling Stones were searching for an appropriate response. Their Satanic Majesties Request was such a poor attempt at psychedelia that they would be bested in their efforts to follow the times by the likes of The Four Seasons‘ Genuine Imitation Life. I’m not kidding, and Frankie Valli and the boys put their thick, dark Italian follicles to great use, helping to launch the overlooked genre of Goatee Rock. The best the Stones could manage was Brian Jones‘ fabulous mutton chops.