Posthumous Rights?

Just listened to “Preludes”, the new release of Warren Zevon work that was culled from a stash of tapes found by his son Jordan, who decided to release some of the cuts.

 
The work is wonderful, and it’s great to hear “new” Warren work, and unreleased cuts of previously released work, but, I struggle over the posthumous release of work that an artist decided not to release while he was alive.  These aren’t tapes that were recorded just prior to Zevon’s passing, they are recordings he made all along the way.  Some seem to be early cuts of numbers he later released with more complete harmonies and instrumentation - - and some are numbers that he just hadn’t released (perhaps because they didn’t measure up to his standards?)

 
The disc was very melodic and pleasant, and an absolute pleasure, however, none of Zevon’s albums over which he had artistic control were ever so calm and relaxing – while there were always some melodic and beautifully constructed songs, there were also edgy, driving, sometimes disconcerting numbers that could tie your stomach in knots or make your skin crawl.

 
So while this exhibits even more fine work by an artist who I love, I have to wonder of the right (and I mean moral and ethical, not legal) of anyone to posthumously release the work of an artist, when the artist  had clearly decided to not release that very work themselves?

 
ps. I know this is no different than a 300 year old “unfinished” symphony or ballet, or unfinished canvas, but I question those too.