I have just downloaded MuseScore 4 and you need to know that it is VASTLY INFERIOR to Musescore 3. It is probably quite good actually, but the problem is that I HAVE TO LEARN HOW TO USE MUSECORE FROM SCRATCH, and I should not have to do this - especially as a MuseScore PRO subscriber. Things I used to use are simply not there any more. For example, and this is one of many, when one has a score open and wants to open another to go into the score bar, there used to be a rectangle icon which you simply clicked and your scores are all there ready to select. Now there is no such icon. So, you have to select 'File' then there is the icon - horay!, you click on it, or use Ctrl O, and then a whole new Musescore App panel comes up and you have to wait for the song to load Musescore in a new panel. So now there are 4 clicks when this could be done with one click previously and you don't get what you cold get before.. THIS IS GOING BACKWARDS!!!! There porbably is a way of getting this to work in Musescore 4 like it did before, BUT I SHOULD NOT HAVE TO BATTLE TO FIND OUT HOW. DO NOT CHANGE THINGS THAT WORK. DO NOT FIX THINGS THAT ARE NOT BROKEN, JUST TO SATISFY THE EGOS OF SOFTWARE DEVELOPERS. ooh look how cool it that!!! What makes things worse, is that if I open a song which was previously in MuseScore 3, work on it and save it, it is lost to Musescore 3 and I am now stuck with the pain of Musescore 4.