Jimi constantine is a singer! Jimi Constantine is a songwriter! The history and future of Rock and/or Roll combined! Before the artist name 'Constantine' he was called 'Jimi Pääkallo.' Before his solo project he played a guitar in a band called Cliché and was the singer of Technicolour. He has also worked with many Finnish artists including Cristal Snow & Uniikki. Jimi has also been acting in a few Finnish movie for example 'Pitkä kuuma kesä' and 'Helmiä ja sikoja'.