Opus is an Austrian pop-rock group that gained international acclaim in the 1980s. The band, composed of lead vocalist Herwig Rüdisser, guitarist Ewald Pfleger, bassist Niki Gruber, drummer Günter Grasmuck, and keyboardist Peter Niklas, is best known for their 1985 hit "Live is Life," which topped the charts in many countries. Their musical style blends pop with elements of rock, creating a unique, catchy sound. Opus' popularity in the 1980s helped define the pop-rock genre of that era, and their signature song remains a staple in popular music culture.