Question: Who sang it's too late to turn back now?
Answer: Eddie Cornelius
Rose Cornelius
Carter Cornelius
Cornelius Brothers & Sister Rose
Disambiguated questions and answers: question: Who sang the 1972 song It's Too late to Turn back Now?
Who sang the 1973 song It's too late to turn back now?
Who sang the 1992 song It's too late to turn back now?
Who sang the 2006 song It's too late to turn back now?
Who sang the 2009 song  It's too late to turn back now?
Who sang the 2010 song It's too late to turn back now?
answer: Cornelius Brothers & Sister Rose
The Chi-Lites
Maxi Priest & Tumpa Lion
The Barking Dogs
Renée Geyer
Pepe Marquez featuring Steve Salas
Natural Questions answer: Cornelius Brothers & Sister Rose (from the Wikipedia article "Too Late to Turn Back Now (song)")