In principle yes. There is some free to share / non-copyright material on the gnutella network. That was the original purpose of the network. However songs you have heard played on the radio or from TV, have a strong chance of being copyright. So if you choose to download them, you do at your own risk.

I share some music from a band I was in several years ago, as does another moderator on this forum sharing both music & video clip of his own band.