Roger Bolton talks to Brian Cox as The Infinite Monkey Cage reaches its century, discusses the Proms with director David Pickard and airs controversy over the music played on 1Xtra.

The documentary Spitting Blades aired on BBC Radio 4, but the complaints in the Feedback inbox were about BBC Radio 1Xtra. During the programme, presenter Simeon Moore, also known as the rapper Zimbo, considered whether some rap music could be helping to glamorise gang violence and raised questions about music played on the BBC's urban station, Radio 1 Xtra. Some Feedback listeners were frustrated by BBC executives from the station declining to appear in the documentary.

The Proms started this week with a digital extravaganza projected onto the Royal Albert Hall. Proms director David Pickard discusses gender targets, reaching a younger audience and why he's already booked some performers for 2022.

The BBC has released its annual report, revealing many key indicators of its performance as well as the headline-making salary figures of its top stars. Listeners react, and the former BBC Trustee and Radio 4 Controller Mark Damazer chews over the implications of the document.

Irreverent science panel show The Infinite Monkey Cage has now reached a hundred episodes - an impressive feat for a show that saw plenty of complaints to Feedback when it first aired. Presenter and physicist Professor Brian Cox and producer Alexandra Feachem hear what listeners make of the show now.

Presenter: Roger Bolton

A Whistledown production for BBC Radio 4.