Some people would call these "one hit wonders" but I am still a big fan of Aldo Nova and a group called The Rainmakers.
I still listen to and really enjoy all five of Aldo's albums. Subject: Aldo Nova has some unfortunate lyrics but his guitar playing was really good.
The Rainmakers made an instant impact on me. I faithfully bought all their albums and would see them live several times. Most of the nation do not even know who they are today.