Celebration Time.... Come On!

You would have to reach out to the artist directly. If they are alive, I have found that artists are open to this idea. You can reach out to the copyright holder to obtain permission to use it. If there isn't a formal channel to do that, you can just email them. I have had original art created for authors for as little as a couple hundred dollars. The trick is getting a high-resolution image that we can "adjust" for the parameters of a cover. So the easiest way to do this is just to reach out and ask. Tell them you're an author who wishes to use their artwork for the cover of your book. Tell them a little about the book so that they understand the scope of the project. I have even had an author reach out to Lara Ingalls's estate for use of a photograph and they granted permission without any payment. So this could be easy.

My general rule of thumb related to music is not to touch song lyrics. Lyrics are heavily guarded. It is an acceptable practice to use a few words sparingly, commonly in an epigraph. I will sometimes tell the author to refer to the song by title only. Titles are not copyrighted. If they are from the same song... you could ask permission from the artist/copyright holder. If the artist is friendly and easily accessible they are usually gracious about using them. If you go through "legal channels" they will often make you pay pretty good money for the use of the song. But that is usually with both music and lyrics combined. It can get complicated. How married are you to the idea?

Catching up