R.I.O. is a German DJ-duo (formerly trio). The members are DJ Manian and Yann Peifer, who originally founded the band in 2007. Until 2012, Tony T. was part of the group. Their biggest hit was the song "Turn This Club Around", which charted in the top 5 in Germany and Austria and at number one in Switzerland.

Source: Wikipedia (https://en.wikipedia.org/wiki/R.I.O.)