It wasn't until I had a child that I discovered the musical genre 'children's folk music'.  Not all of it is shrill or annoying.  Music can put us in a better mood and make us dance.  It can also help empathise with the artist.  Song lyrics (like all media) are one way babies absorb narratives and form their world view.  This was my thinking when I compiled a playlist for baby of lyrics I approved of!  Here it is on Spotify.

I do not suggest babies only listen to children's music.  It is interesting for them to hear a wide range of things and develop an open mind.  As well as folk music, I really like Family Time by Ziggy Marley.