The Hit Pack were, apparently, Staunton and Walker's group - a vehicle to get their songs out on the market, perhaps as a "demo" to be picked up by a major artist to garner more sales for the writing team (Robert Staunton and Robert Walker). It was a combination of a house band and singers. On Colpix in New York, in 1964, the singers were Caucasian (I think the musicians were mixed). They worked with Artie Kornfeld, making Pop music for the teen/surf cult. After Staunton and Walker were signed by Berry Gordy to Motown (1965-66), Staunton and Walker used Black singers, with Robert Dobyne (of Chicago) on lead (and, I believe, with Staunton and Walker, themselves, as the background singers), and they worked in Detroit. After some months with Motown, Staunton and Walker had a big problem with Gordy on producer credits, and Gordy and Dobyne had a falling out, as well. So their tenure at Motown was a lot shorter than it might have been.