Earth's last chance to defeat the Vanguards has already failed, and all musicians August Kitko and Ardent Violet can do is wait for the end of the world at what was supposed to be a victory party in Monaco. When two Vanguards arrive and begin fighting each other instead of destroying Earth immediately, August decides to play an accompaniment on the piano to the strange musical noise they emit. His music calls to one of the Vanguards, August learns there is more to the Vanguards than anyone realized, and humanity might still have a fighting chance.

This is exactly the kind of sci-fi I love: mechs, mystery, and music in this very literal space opera. I cannot wait for the sequel to learn what happens next.

Thanks to Netgalley and the publisher for an ARC in exchange for an honest review.