Erno Matti Juhani "Emppu" Vuorinen is a Finnish guitarist, most famous for being a founding member and occasional songwriter of the symphonic metal band Nightwish. He is the oldest of five children, having a twin brother and three younger sisters. He started to play guitar as a private study at the age of 12 and since then has played in various bands including Nightwish, Brother Firetribe, Barilari, Almah, and Altaria.

Adrián Eduardo Barilari is an Argentine singer best known as the vocalist of the heavy metal and hard rock band Rata Blanca. He also has his own solo band.