Rights of use

Hi! Im not sure how this forum all workds. Ive tried to read all licence information and really dont want to get anything wrong but I still cant understand wheter its legal to use a music background and put song with own melody on top of it and redistribute? For example put on Spotify or sell as a music item? I would be so grateful for answers on this. Kindly, Tove

If you mean, to use the sounds by adding few things and selling the item as new, it’s forbidden.
To be able to do that, you will need permission ( partnership probably ) from the original author