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