The "Oldies" radios stations play Beatles, Beach Boys & some Motown.....never Leslie Gore, and she was really, really popular during the same time frame. (as were many others they ignore.)
I have many music channels on cable. One of the stations plays a lot of Leslie, Mama Cass, Dusty Springfield, Diana Ross, etc. One also plays The Dxie Cups. Love that music. I believe most of these are on Solid Gold Oldies from the 50/60’s.