Adam Wade Gontier is a Canadian musician and singer-songwriter. He is the lead singer, rhythm guitarist and main songwriter for Saint Asonia, but is best known as the former lead singer, rhythm guitarist and main songwriter of the Canadian rock band Three Days Grace. Gontier left Three Days Grace on January 9, 2013. In addition to his work with Three Days Grace, he has been involved in collaborations with other bands including Art of Dying and Apocalyptica.