Liis Viira (born Jürgens; born on April 7, 1983) is an Estonian composer, harpist, and animator. She has also used pseudonym Liz Wirestring. Liis Viira has written quite diverse music for orchestras and choirs as well as chamber music and electroacustic improvisations. Despite being one of the best-known harp players in Estonia and a member of Estonian State Symphony Orchestra, she often uses harp along with non-classical instruments. She has admitted her compositions for human voice are difficult for singers as she uses voice like just another instrument. Viira tends to stress the importance of lyrics, and has often composed her own due to lack of poetry intrinsically harmonic with the music.