'Seasons'] but it was so wimpy we had to throw it out. ... It was just the wrong song for us. I'm glad Terry had a hit with it." Love's "Big Sur", recorded in August 1970, was later remade in a different time signature for the 1973 album Holland. In March 1971, Carl recorded a Moog synthesizer sound collage titled "Telephone Backgrounds (On a Clear Day)". Release Rieley arranged for the group to appear in a series of commercials with the tagline "It's now safe to listen to the Beach Boys." He also arranged a guest appearance at a Grateful Dead concert at Bill Graham's Fillmore East in April 1971 to foreground the band's transition into the counterculture. For their performances this year, the Beach Boys enlisted a full horn section and additional percussionists. A journalist who attended the show later reported that Bob Dylan, who was watching from the sound booth, remarked aloud, "You know, they're pretty fucking good." Contrary to what is later written of the show, the Grateful Dead's audience was unfavorable toward the Beach Boys' appearance. On May 1, the band performed at The Peace Treaty Celebration Rock Show, an anti-war rally concert organized by the Mayday Collective, with approximately 500,000 people in attendance. Footage of the band performing "Student Demonstration Time" later appeared in the 1985 documentary An American Band. On May 24, "Long Promised Road" (B-side "Deirdre") was issued as lead single, becoming their sixth consecutive US single that failed to chart. That same month, Dennis accidentally punched his hand through a glass window, severing nerves and tendons. The injury left him unable to play drums for the band, and so he was replaced by the Flame's Ricky Fataar. Dennis continued to make occasional appearances at concerts, singing or playing keyboards. In July, the American music press rated the Beach Boys "the hottest grossing act" in the country, alongside Grand Funk Railroad. On July 7, the film Two-Lane Blacktop, co-starring Dennis, made its worldwide premier in New York City. Despite critical acclaim, the film was largely unnoticed by cinema-goers. Surf's Up was released on August 30 to more public anticipation than the Beach Boys had had for several years. Aided by some FM radio exposure, it outperformed Sunflower commercially and was their best selling album in years. On September 6, Time reported that the album was "doing well enough. Barely out, it is fast