First under Soviet rule, then in the remarkable flourishing of a liberated nation, Estonian contemporary music has held its independent head high and showcased it, under the aegis of the Estonian Composers' Union, first for a few days and now for more than a week in spring. In this, its 40th anniversary year, Estonian Music Days became World Music Days, hosting composers from 60 countries as the base for the 96-year old ISCM.

Every spring for the last five years, we have gathered around a camp fire in hidden locations in a wood in Sussex, to join the nightingales and to “re-wild” ancient folk ballads. We walk in silence through the forest at night, with no torches, reawakening our aural senses. These meditative pilgrimages give people permission to be in a state of communion with nature, to be silent to hear the birds. Singing with the birds is powerfully life-affirming: every year, someone writes to me afterwards to say how they are going to change their life, get divorced, or move jobs…

Leonardo da Vinci died 500 years ago on 2 May this year. We all know he was a painter, sculptor, architect, engineer, pioneer of flight and anatomist – yet according to Vasari, Leonardo’s first job outside Florence was as a result of his musical talents.

"One talks, the other doesn’t" is about as crude a description as could be of the Swedish masterpiece, Persona. Profoundly experimental even today, Ingmar Bergman’s film was at base about the intense, vampiric encounter between a mute actress suffering a breakdown and the garrulous nurse assigned to care for her.

Halfway through filming For Folk’s Sake, a documentary for BBC Four about Morris dancing, I received a package in the post that would dramatically change the course of the programme. It was from my mother. Inside were a number of yellowing newspaper articles from the 1920s and 1930s and some dog-eared black and white photos.

This is my third year as festival director of the London Handel Festival, an annual celebration of the life and work of composer George Frideric Handel, which takes place every spring in venues across the capital.

Damn exotica.

It is hard to absorb the news that Keith Flint of The Prodigy has been found dead at his home in Essex. Keith Flint! The guy with the double Mohican and panda eye-liner who terrified Middle America in the video for “Firestarter”. He was ever an integral part of The Prodigy’s unstoppable live electronic dance assault and, while it’s too early to ponder such things, it’s difficult to imagine them without him.

In a way, he was a second Bernstein.

So here we are with another edition of IQ, and the subject this week is theatre. Question one: which actor originated several leading roles in the plays of George Bernard Shaw, including Marchbanks in Candida, Dubedat in The Doctor's Dilemma, and Jack Tanner in Man and Superman? Answer: Harley Granville Barker. Question two: which writer originated the use of the Royal Court Theatre in Sloane Square as a home for new plays and rediscovered classics?