Q: Context: "He's Gonna Step On You Again" (a.k.a. "Step On") is a song co-written by Christos Demetriou and performed by John Kongos in 1971.

Question: who sang he going to step on you again?
Let's give stream of consciousness below
To answer this question, we should know that: "He's Gonna Step On You Again" (a.k.a. "Step On") is a song co-written by Christos Demetriou and performed by John Kongos in 1971. So the answer is John Kongos.