Musica Elettronica Viva (MEV) is a live acoustic/electronic improvisational group formed in Rome, Italy, in 1966. It is "something of an irregular institution, a band that has come together intermittently through the years". Its founding members have been reported variously as Allan Bryant, Alvin Curran, Jon Phetteplace, and Frederic Rzewski; Rzewski, Curran, and Richard Teitelbaum; Curran, Phetteplace, Bryant, and Carol Plantamura; and Rzewski, Teitelbaum, Plantamura, Bryant, Phetteplace, Ivan Vandor, and Steve Lacy. Garrett List and George Lewis subsequently joined the group.
MEV were early experimenters with the use of synthesizers to transform sounds: a 1967 concert in Berlin included a performance of John Cage's Solo for Voice 2 with Plantamura's voice transformed through a Moog synthesizer. At the end of the 1960s, they took part in the group Lo Zoo, founded by artist Michelangelo Pistoletto. They also used such "non-musical" objects as amplified panes of glass and olive oil cans.
Their performances achieved notoriety in Italy for their ability to generate riots.
The final MEV tour was in 2017.