Jools chats to singer and actor Olly Alexander, best known as frontman of chart-topping band Years & Years and most recently as the star of hit drama It's a Sin. Olly chooses and discusses his favourite performances from the Later archive and treats us to an impromptu performance of a favourite song of his with Jools at the piano.Making her British TV debut on the show at the tender age of 20 is British rising star Griff, who made this year's BBC Sound Of shortlist and has the stamp of approval from her hero Taylor Swift under her belt. Griff will perform her latest Radio 1 playlisted dark pop anthem Black Hole.Jools also invites composer and musical polymath Nitin Sawhney and the multi-talented cellist and singer Ayanna Witter-Johnson to his studio to perform a beautiful duet called Movement II from Nitin's recently released album Immigrants.