New Wine Singers.
Thanks for the link, Rick. As you may have seen, the New Wine Singers version was in my CV101 but had been disabled, which usually happens for copyright reasons.
It's a pretty good version I think - again in the CV, the female voice is Elaine "Spanky" McFarlane, who went on to form her own group, Spanky and Our Gang. They had two really well put together hits, "Sunday Will Never Be The Same" and "I'd Like To Get To Know You." I always wondered why they never had more - good instrumental work and harmonies.