Noise music is a type of music that employs noise as a musical resource. It is generally created with nontraditional musical instruments such as static, feedback, electronics, circuit bent instruments, or any other noise source. The genre explores cacophony, repetitive sounds, atonal randomness, indeterminacy and dissonance. The earliest noise music was created by futurist composer Luigi Russolo in the early 1910s. His piece "Veglio di una città", released as a single in 1913, was the first ever noise song, shocking Italian audiences.