Diabulus in Musica is a Spanish symphonic metal band, formed in 2006.
The band was formed in Pamplona, Navarre in 2006 by Zuberoa Aznárez, Gorka Elso, Adrián Vallejo and Jorge Arca. Lead singer Zuberoa said in an interview with Sonic Cathedral WebZine that the main reason she founded Diabulus in Musica is because she needed an outlet for developing her own musical ideas. Xabier Jareño and Álex Sanz joined the band throughout the next few years. During the time Diabulus in Musica was recording some own tracks, which ones they won some battles of bands and some fame in Pamplona with. In 2009, the band released their first EP "Secrets" with the best tracks they recorded before. Those tracks and the name of the demo were included in their first full-length album Secrets.