Liability waiver

A cinematographer that this happens to :

A client wants me to use a song in a film That he is editing for them. If he can’t buy the rights to the song, he asks the following:

Is this sentence grammatical and well structured?

I’m going to ask you to sign a liability release form relieving me of any responsibility in connection to potential copy right infringement due to use of a song we can’t buy the rights.

If you were to say it naturally, what would you have said?

Thanks