

Potentially yes, if you use existing IP to make music, doing it with a computer isn’t going to change anything about how the law works. It does get super complicated and there’s ambiguity depending on the specifics, but mostly if you do it a not obvious way and no one knows how you did it you’re going to be fine, anything other than that you will potentially get sued, even if whatever you did was a legally permissible use of the IP. Rightsholders generally hate when anyone who isn’t them tries to make money off their IP regardless of how they try to do it or whether they have a right to do it unless they paid for a license.
Don’t be a dick.