Labyrinth soundtrack question

[Princeton]

I heard that Chaka Khan, the R&B singer, can be heard on the Labyrinth soundtrack. What song does she sing?

 

[alorindanya]

Really? The only possible place that had female voices would be Underground, the song that plays in the closing credits where there is a choir echoing the chorus.

 

[BlueFrackle]

I also think this is true. If you watch the making of 'Inside the Labyrinth' in the first couple of minutes the woman with red hair looks exactly like Chaka Khan! Can anyone confirm?