Question: What is the name of the American singer songwriter and television personality whose identity was used in an off-Broadway musical based on 'American Idol' where contestants dream of winning a spot as the opening act for this celebrities new tour?
Sentence (from "American Juniors"): In this way, "American Juniors" more closely resembled the British series "S Club Search", which had produced the group "S Club Juniors".
Relevant evidence: No