I assume that all tunes on this site that have a composer are protected by copyright, isn’t it so?
And that traditional tunes are not.
But how about “The Butterfly”; the sheet music says “attributed to Tommy Potts”, so is it his tune, and is it protected by copyright?
The reason I ask is that I like to make small arrangements of tunes and upload them to Soundcloud, and I don’t want to violate any copyright rules.