Cassio Audi was a member of the Brazilian group Viper. He joined the band as a teenager in the 1980’s. He remained in the group until 1989, when he left to pursue other goals. The band played heavy metal, thrash metal, power metal, and alternative rock music. Cassio Audi was known as the drummer in the band, but he was also a song writer and singer. In 1987, Viper released an album entitled Soldiers of Sunrise, on which Cassio is credited for writing a song. This album went on to be known as their best album selling over ten thousand copies. The contributions he made on this album were his final work with the band. In 1989, Viper released their second album Theatre of Fate. Viper’s music was a mixture classical music and metal. The album Soldiers of Sunrise was very popular both with critics and fans of the band. The album was recognized in world magazines such as Metal Forces, Kerrang, and Metal Hammer. These magazines focus on the music of heavy metal bands. Many Viper fans were from the band’s home country of Brazil. Heavy metal began to gain popularity in Brazil in the 1980’s when the country was recovering from political dictatorship. The music has grown with now having thousands of heavy metal and punk groups. Cassio and his band mates were influenced by British metal bands. The group has credited Iron Maiden as being the most influential. Viper was loved by fans and they were praised for their talent and skill. The band was influential in spreading heavy metal to Latin America. Drummers were known for being influential to the sound of the band. With their loud and unique beats drummers were instrumental for the band forming their sound. Cassio’s contribution to Viper and the music industry is both remarkable and unforgettable.