Terry Jacks is a Canadian singer-songwriter best known for his hit song "Seasons in the Sun," released in 1974. The song, which became a worldwide success, is based on the French song "Le Moribond" by Jacques Brel. Jacks' version topped charts in several countries and is often associated with themes of nostalgia and farewell. In addition to his music career, Jacks is also a record producer and environmental activist. He has worked on various projects and has been involved in promoting awareness about environmental issues, reflecting his commitment to both music and the planet.