Isabella (or "Billie") Tweddle was born 27 May 1999 in Ripon in North Yorkshire.[1][2][3] She began playing guitar and singing when she was seven or eight,<ref name"rg1">"The sky’s the limit". Ripon Grammar School. Retrieved 10 January 2016. </ref>[4] and started writing songs soon afterwards.[5] By the age of nine she had her own YouTube channel on which she posted covers of pop songs, mostly for the benefit of her grandparents who live in France.[5] When she was twelve she performed some music sessions for a local YouTube channel called Ont' Sofa.[6] Among the songs she performed was a cover version of Lucy Rose's "Middle of the Bed", which quickly received thousands of views.[6] In a later interview Marten said "I didn’t understand how quickly it could spread.