I upgraded from Biab 2014 everything pack. and not every thing worked right, so I uninstalled it to do a clean install, In 2020 I'm not finding the 1st real track set, that was something I was trying to do is navigate myself around because over different years PG music focuses on different emphasis. 20015 was strings for example, 2019 was 64 bits 2020 the new ultra thick choirs. But I can't read the midi 1 -77 folders , Is there a difference between upgrading and buying the whole program? It looks pretty complete to me. I'll just have to play around some more. Thanks I'll try out some of these ideas.