I have spent some lockdown time making arrangements for solo ukulele. Most of the originals are old and I'm considering making them freely available, but wonder what the position is for more modern music which is still in copyright. Since I started playing I've benefitted a lot from free arrangements that other people have posted, but how legal it is given that much of the music is 20th century? I'd like to add my versions to the pool as a kind of 'thank you' but have no wish to break the law.
I'm curious too about the many popular song sheets I download, with lyrics and chords, that I use with the old folk at their social club (not now, obviously).