Soundtrack album missing bard songs?

cwy

The $9 official soundtrack album has lots of tracks, they it seems to be missing all the bard songs: Ode to Ayrenn, Red Diamond, Planemeld is Nigh, etc. Youtube has the ones sung by Malukah. But the game seems to have several versions of each song sung by different singers, some I can't find online. I would the hope the official album would offer all those recordings, especially the ones I may not even have heard in the game, since I'm nowhere close to finishing all the game's content.