Juliet Jonesin Sydän (Juliet Jones' Heart) is a Finnish rock band which was founded in 1980. During the years 1985-2001 they have recorded overall ten albums and five collections. The most popular songs of JJS are "Helppo elämä" (Easy life) and "Miksi naiset aina rakastuvat renttuihin?" (Why the women always fall in love with louses?).