Charlotte Franklin Hatherley (born 20 June 1979) is an English singer, songwriter and guitarist. She initially came to prominence as guitarist and backing vocalist for alternative rock band Ash. Since leaving Ash in 2006, she has pursued a solo career and also acted as a touring instrumentalist for Client, KT Tunstall, Bat for Lashes and Birdy. Hatherley is now performing solo under the moniker of Sylver Tongue and as a recording and touring member of NZCA Lines.