Vocal work Norwich singer cut in half? Thank you, thank you! (7)
I believe the answer is:
cantata
'vocal work' is the definition.
(I've seen this before)
'norwich singer cut in half? thank you thank you' is the wordplay.
'norwich singer' becomes 'cant' (I can't justify this - if you can you should give a lot more credence to this answer).
'cut in half?' indicates taking half.
'thank you' becomes 'ta' (informal way of saying thank you).
'thank you' becomes 'ta' (informal way of saying thank you).
'ta' with half the letters taken is 'a'.
'cant'+'a'+'ta'='CANTATA'
Can you help me to learn more?
(Other definitions for cantata that I've seen before include "Vocal work, maybe by Bach" , "Vocal setting of a text (often religious)" , "Musical piece" , "Short oratorio performed in concert" , "One of 200+ by Bach" .)