Example: [Artist] - [Song]
Is that little line supposed to be a hyphen, non-breaking hyphen, figure-/en-/em-dash, horizontal bar, minus sign or double oblique hyphen? Are there supposed to be spaces surrounding that line?
I've tried to find more information about this topic on the internet, but no source seems to address this specific type of usage. The sources I've found just answer questions about how different kinds of lines generally are used.
In the titles of music videos on YouTube, simple hyphens seem to be used for this application. Is that really correct?