Katie Derham introduces highlights from the last week on In Tune, including live music from pianist Jean-Efflam Bavouzet and the Doric String Quartet. Plus, the best bits from In Tune's BBC Music Day celebration, featuring members of the Military Wives Choirs, guitarist Milos Karadaglić, violist Maxim Rysanov, violinist Alexander Sitkovetsky, and soprano Carolyn Sampson.