Chamber music by Helen Leach live in studio. Lara Bickerton and Laurentia Editha on Blue Planet III

Composer Helen Leach joins Katie on In Tune ahead of the release of her new album of chamber music, a Window to the Stars. Pianist Simon Leach, clarinettist John Bradbury and cellist Adrian Bradbury also play live from the album.

The BBC has confirmed that Blue Planet III will air on BBC 1 on the 1st of November. Series producer Lara Bickerton reflects on making the programme and composer Laurentia Editha chats to Katie about collaborating on the score with Hans Zimmer and Thom Lukas.