9Bach is an alternative folk group formed by Welsh singer-songwriter Lisa Jên and guitarist Martin Hoyland.The group was formed in 2005 when their repertoire mainly consisted of traditional Welsh-language folk songs.In 2015, 9Bach's album Tincian won Best Album at the BBC Radio 2 Folk Awards. The band was joined onstage by Bethesda-based male voice choir Côr Penrhyn for their final song of the evening.