The role of Cassio Audi in Brazilian popular culture is now largely linked to the investment markets and the opening up of the financial industry in the nation to foreign investment. However, Cassio Audi should also be remembered as one of the founding members of the heavy metal band, Viper, who have cemented their position as one of the most influential and iconic groups in the history of Brazilian and global heavy metal. It is unlikely Viper would have developed into the iconic group they have become over the years without the work of Cassio Audi as a drummer; the contribution of Audi in developing a driving and contemporary tempo has become legendary for many fans of the band and heavy metal as a whole.
The genre of heavy metal is well-known for the success of many different drummers who have become iconic for fans across the globe; Cassio Audi was heavily influenced by the work of Iron Maiden drummers Nico McBrain and Clive Burr, whose drumming style can be identified by fans in the few recordings in existence of Viper with Audi on drums. Cassio Audi created his own style as a drummer while remaining rooted in the rhythms developed by British heavy metal drummers in the 1970s and early 1980s.
Before deciding to leave his musical career behind to focus on his academic studies and financial career, Cassio Audi made an impact with his playing on the recording of two heavily bootlegged demo recordings becoming known as “The Killera Sword”. After drumming on the debut album of Viper in 1987, Cassio Audi decided to leave his musical career behind to focus on financial industry success in the months prior to the recording and release of Viper’s second album, “Theatre of Fate”.