This time the spotlight is on the Battle of the Bands and the swing era of the 1930 and 1940s plus Sibelius and Vaughan Williams. Katie is joined by jazz singer and host of the Battle of the Bands prom, Clare Teal, conductor of the Borusan Istanbul Philharmonic Orchestra, Sascha Goetzel and British composer Mark-Anthony Turnage, plus David Owen Norris presents 'Chord of the Week'.