Season Premiere --Tom Jones introduces show --James Brown sings ""World"" --CSN&Y sing ""Down By The River"" --Buck Owens and The Buckaroos sing ""Tall Dark Stranger"" --Oliver sings ""Jean"" --Three Dog Night sing ""Easy To Be Hard"" --Tom Jones sings ""I'll Never Fall in Love Again"" --Music Scene Singers sing ""Sugar Sugar"" --Cast previews next week show with guests Eydie Gorme, Janis Joplin, Gary Pucket and Lou Rawls, Three dog Night and the Nation's #1 song, and ""The New People"", next on ABC.