brought on by luthiers such as Antonio Stradivari and Andrea Amati. The modern version of the instrument developed gradually from older European acoustic stringed instruments such as the lira. Following the birth of rock in the 1960s, some rock bands began to experiment with acoustic songs. This would be known as acoustic rock, and many well-known artists such as Eric Clapton and Nirvana performed acoustic versions of their well-known songs in the early 1990s, which were collected on the MTV Unplugged series. Pop music artists have also experimented with acoustic music as well, with this variant sometimes being called acoustic pop. Like acoustic rock, some acoustic pop songs have also made their way to MTV Unplugged as well. Some notable acoustic pop songs include True by Ryan Cabrera and Exile by Taylor Swift featuring Bon Iver. By the 2000s, popular indie musicians began to identify their genre as "contemporary acoustic", in opposition to being classified as "folk music". Daniel Trilling wrote, "Folk is a word that strikes fear into the hearts of many aspiring pop musicians. Not only does it conjure up images of the terminally naff — woolly jumpers, beards, and so on — but it is also the journalist's catch-all term for legions of singer-songwriters too bland to merit a better definition." Some music interest groups in the United States use the term "acoustic music" alongside the genres of folk and Americana music, like the Ogden Friends of Acoustic Music. The International Acoustic Music Awards hosts an annual competition for original songs. Their rules state that a song can be considered acoustic as long as an acoustic instrument, including voices, can be clearly heard. Acoustic music is often easier for business owners to host because there is less need for amplification and the level of volume is less intrusive. In June 2021, the city of Cambridge, Massachusetts, allowed small businesses to host acoustic concerts without applying for a live entertainment permit. Cambridge defined an acoustic performance as having no amplification of sound except for one microphone, and having no more than five acoustic performers or musicians at a single venue at one time. References Bibliography External links International Acoustic Music Awards 20th century in music Instrumental music Acoustics