The Unissued Motown set from 1967 has a track called "Nothing for Nothing", credited to Jr. Walker & the All Stars...details from DFTMC

3.12 Nothing For Nothing - Jr. Walker & the All Stars
[[Henry Cosby-Sylvia Moy-Stevie Wonder-Cornelius Grant)
Produced by Henry Cosby
Track recorded June 21, 1967, instrumentation added June 26, strings added July 7, 1967

It sounds like an early working of :

I'm More Than Happy [[I'm Satisfied) [[Henry Cosby-Sylvia Moy-Stevie Wonder-Cornelius Grant) published Jobete 01-Nov-67

alt title: Nothing For Nothing

Stevie Wonder; recorded Hitsville-GW, completed 19-Dec-67 ; produced by Henry Cosby ; arranged by Henry Cosby, Paul Riser ; [v1]


The vocal on this track doesn't sound like Jr. Walker to me.
Any thoughts on this?