Lost in the 60s

I have very vague and fleeting memories of a cherished song I heard in the 60s as a young boy in Colorado. I only faintly remember a chorus of women singing what sounded like 'My Oh My, Lakes on ? (it sounded as though they were saying 'Saturn'), and then a chorus of men would sing something like 'True to the World, da da da ???'. I'm sorry, I cannot remember any more ... a long, long, long shot. But folks in my age group out there, if you come up with the answer, would be eternally grateful! Kind Regards, Michael, Lost in the 60s email ntcmikee@yahoo.com