In mid-1968, the group was photographed for a "Life" magazine story on "The New Rock", appearing on the cover of the June 28, 1968 edition. They undertook their first major tour of Europe in August–September 1968, playing alongside the Doors in the Netherlands, England, Germany, and Sweden. In a notorious incident at a concert in Amsterdam, while the Airplane was performing "Plastic Fantastic Lover", Doors singer Jim Morrison, under the influence of a combination of drugs fans had given him, appeared on stage and began dancing "like a pinwheel". As the group played faster and faster, Morrison spun around wildly until he finally fell senseless on the stage at Marty Balin's feet. Morrison was unable to perform his set with the Doors and was hospitalized while keyboardist Ray Manzarek was forced to sing all the vocals. It was also during this tour that Slick and Morrison allegedly engaged in a brief sexual relationship, described in "Somebody To Love?," Slick's 1998 autobiography.