This is most interesting. I didn't realize Jimi Hendrix's music (at least Purple Haze) is now Public Domain in Canada. I imagine this doesn't include his cover

This is most interesting. I didn't realize Jimi Hendrix's music (at least Purple Haze) is now Public Domain in Canada. I imagine this doesn't include his cover songs, such as those from Bob Dillan. I have often read that Hendrix' music will never be public domain in my lifetime because of record companies buying the rights. Is any of that true?