Here are some audio clips with Jamie on lead vocals. These were very early rehearsal tapes, probably the first or second rehearsals of the songs:
She's Not There by The Zombies
Ain't No Mountain High Enough by Marvin Gaye & Tammi Terrell
Remember [ Walking in the Sand ] by The Shangri-Las
The Locomotion by Little Eva
Black is Black by Los Bravos
I Only Want to Be With You by Dusty Springfield