Question: What girl group did the backing vocals artist in the song "Horn OK Please" come to prominence in?
Sentence (from "Horn OK Please (song)"): The song is composed by Vishal Bhardwaj, the composer and co-producer of the film with the lyrics written by long-term collaborator Gulzar, performed by Honey Singh, Sukhwinder Singh and with backing vocals by Anushka Manchanda.
Relevant evidence: Yes