This album best sums up the greatest contribution of the Beach Boys to rock music.  Many people will argue that Pet Sounds is their greatest work.  However, this album is a soundtrack to the fun-in-the-sun portion of the  sixties.  Even today, this music best portrays beaches like Santa Cruz and  Pismo, where a good time is inevitable.  The harmonies on "The Warmth  of The Sun" really do reflect the warmth of the sun, that can only be  felt on a beach.  "In My Room" and "Don't Worry Baby"  are classics in their own right, destined to be part of the classical music  of this century.  "Surfer Girl" is to Brian Wilson, as  "Yesterday" is to Paul McCartney.  The music might be considered  simplistic, but simplicity is deceptive, so don't underestimate this album.  The  songs...the harmonies...all reflections of Brian Wilson's artistry at  its peak. Absolutely essential...