Mosaic Voices, founded by its Musical Director, Michael Etherton, is a professional a cappella vocal ensemble dedicated to performing, preserving and commissioning new music from the Jewish tradition. It is the resident choir of one of Europe's most beautiful synagogues, the New West End Synagogue in London. In 2020, Mosaic Voices launched The Blue Book, a major new volume of choral works, arrangements and transcriptions of music from the British-Jewish tradition. Mosaic Voices' first album, The Blue Book, was released in 2018, and the group is currently working on its second album. Mosaic Voices regularly commissions new music, including from its Composer in Residence, Benjamin Till, and has been broadcast several times on BBC Radio 3.