Occasionally when sharing music on here or in chat, I've forgotten or not bothered to label the link. I guess I've assumed that if it says "youtube" it isn't necessary because the person knows it's a YouTube video.

My question is, is it sufficient to say "this is a song I'm listening to" or do I need to say the name of the song? I get that the reasoning might be that people get triggered by different things. I'm just wondering what the exact rule is.