Drama: A Leap In The Dark

Radio 4, 3pm

Made as part of the BBC’s centenary celebrations, this production looks back at the creation of the very first radio play. Alex Jennings

(right), Rufus Wright and Jane Slavin play those behind the idea, which revolutionised broadcasting and helped boost the popularity of the new wireless sets.

Archive On 4: It’s The Pictures That Got Smaller (Radio 4, 8pm) draws parallels between the early days of silent film and modern TikTok videos, revealing the ways in which makers have persuaded viewers to watch.

In Sound Of Cinema (Radio 3, 3pm) Matthew Sweet showcases scores from films focusing on courtship.