Wasnt Frederick Johnson part of the Delfonics?

Yes, Frederick Johnson was indeed a member of The Delfonics, a popular soul music group known for their smooth harmonies and romantic ballads in the 1960s. He contributed as a vocalist and was part of the group's distinctive sound, which helped them achieve hits like "La-La-Means I Love You." The Delfonics are often credited with influencing the Philadelphia soul genre.