Broadway musical that Yul Brynner abandoned? (4)

I believe the answer is:

hair

I'm a little stuck... Click here to teach me more about this clue!

'broadway musical' is the definition.
'hair' can be an answer for 'musical' (I've seen this before). I am not certain of the 'broadway' bit.

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for hair that I've seen before include "Barber's speciality; musical" , "Red face powder" , "A very small quantity" , "Coiffure" , "Stage musical" .)

I've seen this clue in The Telegraph.

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