Song projects vs. pages
Song projects are private to you and any Songspace collaborators that you invite to join those song projects. Think of them as your (and your team's) workspace for the song.
Each song project in your catalog has a corresponding song page, which can be shared with and viewed by anyone by way of a share or pitch link.
Before you send out a song, you can always preview your song page by clicking Preview from the more options menu.
From your song project, you can set the preferences for what displays on your song's song page. You can find related articles for how to set up your song page here.