You're not missing out much if you don't know "The Many Moods Of Murry Wilson". It's an Hollyridge Strings-esque easy listening mess. The only relevance for die-hard Beach Boys fans is the inclusion of "Italia" (written by Alan Jardine) and a schmaltzy cover version of Brian Wilson's "The Warmth Of The Sun".
BTW,
"Help Me, Rhonda" - 13 years later...