Where to get a sound crew (5)

I believe the answer is:

crewe

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

But I can't explain it at all! Could you help me understand?

(Other definitions for crewe that I've seen before include "Cheshire town of railway fame" , "Ace wanderer lax (anag)" , "Cheshire town long associated with railways" , "Cheshire rail junction" , "Famous railway town" .)

Want a hint initially instead of a full solution? Install my app