We’ve got our hands on the official track list of the soundtrack of Rec 3 Genesis, the horror movie directed by Paco Plaza:

Rec 3 Genesis Original Motion Picture Soundtrack Music composed by Mikel Salas.
1. Cinemascope 2. Zombies 3. Clara 4. The Knights of Sant Jordi 5. Attack and Pray 6. John Esponja 7. Natalie 8. Mama 9. Uncle Víctor 10. Union, Pt. I 11. Union, Pt. II 12. After 13. You’ll Be a Helluva Father 14. Always

You may listen to samples of the songs of the soundtrack below:

The movie soundtrack of Rec 3 Genesis is available on itunes.
:)