There are at least 4 entities named "Adagio":

1) Adagio is a French neo-classical progressive band hailing from Montpellier, France, formed in 2000. Stephan Forté, the band's guitarist, is considered the creative force behind Adagio. Adagio's music is characterized by technical precision, dark, dense orchestration, complex lead work, and a driving rhythm section. On the group's 2006 release Dominate, they added harsh vocals to their sound. The band's 4th album, Archangels in Black, was released on 02/02/09, and is the first album to feature their new vocalist, Christian Palin.
Adagio's official website: http://www.adagio-online.com
Adagio's MySpace: http://www.myspace.com/adagioofficial

2) Adagio is a doom/death metal band from Brazil.
Adagio's MySpace: http://www.myspace.com/adagiodoommetal

3) Adagio is a hungarian crossover band.
Web: http://www.adagio.hu

4) Adagio is a hip-hop emcee from Philadelphia in the United States. He's most known for a track he did called "Who Makes It Hot?" with The Juggaknots. He has also released some other 12 inches from the late 90's and early 00's. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.