Rewritten not as a solo piece (6)

I believe the answer is:

sonata

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

'solo piece' is the definition.
'sonata' can be an answer for 'piece' (I've seen this before). I am unsure of the 'solo' bit.

'rewritten not as a' is the wordplay.
'rewritten' indicates anagramming the letters.
'not'+'as'='notas'
'notas' is an anagram of 'sonat'.
'sonat'+'a'='SONATA'

Can you help me to learn more?

(Other definitions for sonata that I've seen before include "Piece of music for solo piano" , "Moonlight, perhaps" , "Type of musical composition" , "Work for soloist" , "Musical composition for a solo instrument" .)

I've seen this clue in The Irish Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.