S4E2: Glasgow/London Liverpool Street

Claudia Winkleman and Mika are joined by jazz superstar Jamie Cullum. A last-minute change of location means several of Scotland's amateur pianists travel south from Glasgow to London Liverpool Street. Among those taking part are a pianist who refused to give up after a brain tumour left him unable to use his right hand, a Mexican mother rediscovering her passion for playing, and a gifted teenager inspired by the Isle of Lewis.