Worth noting that during the USMCA negotiations under Trump, Canada agreed to extend copyright to life-plus-70 years, up from the current life-plus-50. However, Canada has a 2 year deadline (from 1 July 2020) to actually implement the change to life-plus-70.
Sounds like the Doors may slip through.
This strikes me as backwards - like, I feel like there's minimal public interest in getting the specific recording of the performance of the songs into the public domain, while substantial interest in getting the songbook into the public domain so that people can cover it and make derivative works freely. And yet the length of the copyright terms is far stricter on the songbook vs the album, where one is a fixed time from recording while the other adds the lifespan of the author to the mix.