Summer Days features another Wilson world-beater production, "California Girls," and the band's second No. 1 single, "Help Me, Rhonda." Ever pressured by commercial concerns, Wilson and the band created what was in essence the true follow-up to the All Summer Long album. Still, there's a level of musical sophistication to tracks such as "Salt Lake City," the Phil Spector tribute "Then I Kissed Her," "Summer Means New Love" and "Let Him Run Wild."