Setting up a new iphone after back up?

I was thinking of backing up my music on icloud but wanted to clear all the data and start again.so.
1)after setting up new iphone would the back up still be there to be loaded on the phone?
2) will musics be backed up?

If you backed up all of your music onto icloud you can then put all the music onto your new iphone by selecting to use that backup in icloud

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