"Summer Days (And Summer Nights!!) was a bit of a regression from the success of Today!, lapsing back into that distressing division between first-rate cuts and lightweight also-rans that characterized their pre-1965 albums. The difference is that the very best tracks were operating on a more sophisticated level than the 1962-1964 classics. "Help Me, Rhonda" was a number one single and would be their last Top 40 exercise in sheer fun for a while. More impressive was "California Girls," with its symphonic arrangement, glorious harmonies, and archetypal statement of Californian lifestyle"