Who sung these two '60's R & B /soul one hit wonder songs ?

Question

Two of my favorite R & B/soul songs of the '60's where hit songs made by 2 different groups who never made the R & B charts again after these one hit wonders. 10 points to the first person who can name the group that sung " She Blew A Good Thing " & also name the group that sung " No Man Is An Island " ???

We have a Winner !!...Right on the money , RoVale - You get 10 points plus kudos for knowing about some pretty obscure songs/ artists that I used to hear Frankie Crocker play on WWRL Radio.

Answer 1

She Blew A Good Thing - The Poets
No Man Is An Island - The Van Dykes