Kinryo Rock 0: Moonage Daydream

From Alien Books:

Blood, sex and Rock & Roll! In this world, vampires live among humans, but coexistence is not easy. The moment they don't follow the rules, there are special agents prepared to take them down, some with the strength of the law, and others with the power of rock! The prequel volume sets the stage with three short stories about the main characters that will collide in the main series!