Update: It seems the original hour and a half video was missing a few songs—roughly three hours worth, as the official Civilization YouTube removed the original video and added a new one that's over four hours long. It also has correct timecodes for each song in the video description, so we've updated the embedded video above to the new version.
Original story: There's a lot to love about a whole video about how that music evolves through the different game eras. And now, all four versions of each civ's theme song is available to stream for free in one massive video on the official Civilization YouTube channel.
As you civ leaders you've met, and the version depends on what era they are in. So if you are in the classical era but meet while they are still in the Ancient era, the Ancient German track will be mixed into the pool of possible music you can hear.
If, like me, you are going to listen to the whole video embedded above at least twice, you'll start hearing how the different themes shift, and then hopefully start recognizing them in the game. I don't believe this is the entire soundtrack (for example, mod Civ 6 to add our own tracks and make that collection even bigger.
