Aurium is a Serbian progressive opera rock/metal band formed in Serbia, Belgrade in 2012. Its name was inspired by a medical term (Tinnitus Aurium) describing sounds of physiological or pathological origin, which may or may not always be perceived in consciousness. Colours are the basis of all songs; they hide behind melodies, diving deep below the surface. Lyrics talk about love, life and loss which pervades the subconscious. Originally a rock band, Aurium adjusted its musical style by adding orchestral instruments, choirs and audio effects to color the songs, and many electronic instruments to make it completely understandable.