I'm in the process of listening to all of my "albums" on CD's in alphabetical order so I don't miss any. I've spent the last couple of years getting all of my equipment refurbished, sometimes including upgraded electronics. I also purchased new interconnects and speaker cables. I'm just starting basic room treatment.
With all of the changes I've made many of the titles I listen to sound different and better than ever even though I've had them for decades.