Twenty million people tune in every month for NPR's Tiny Desk concert series, which has blossomed to more than 1,200 shows featuring artists like Alicia Keys, Taylor Swift and Doechii.

Radio programmes were also put on gramophone discs for overseas distribution; a practice which continued until the 1980s. ... Video cassettes: A series of formats were introduced in the 1970s.

A host of familiar faces are set to return to BBC Radio Ulster as part of a series of programmes celebrating the station’s 50th birthday. The broadcaster is set to mark the milestone this week ...