They started working on some songs and meanwhile Kostas (Synths) also joined the band. In October 2000, the band recorded their first demo-cd called "Charming Whisperings from the Strange Past", featuring 4 tracks. The demo was well-accepted by critics and fans. During the following years the band underwent some line-up changes, performed live at local clubs and started working on new material.

In 2006 "Diabolical Principles" recorded the Mcd "Investigating a new dawn", featuring 5 tracks, with the current line-up: Gareth (Guitars, Vocals), Drakhon (Bass), Geegor (Drums) and Q_Snc (Synths).

In 2007 the band inked a deal with "O.B.S.E. Prods", which managed to release and promote Diabolical Principles' debut Mcd. In 2009 "Diabolical Principles" recorded the full cd "Beyond the horizon" featuring 8 tracks and released by "Wicthcraft Records" !

...10 years have elapsed since Diabolical Principles

yielded to the charming whisperings from the strange past

and spent time investigating a new dawn.

Now it's high time they went beyond the horizon...