Gangnam Style and K-pop's visual power

TV channels dedicated to them are shutting down around the world and some superstars have even stopped making them, so are music videos in decline, or are they more vital than ever to grab our attention?

We hear from industry insiders in the US, Europe and in South Korea on how the streaming era has changed how we consume music - and shifted the way record labels make money.

Produced and presented by Daniel Rosney

(Image: Ne-Yo on set during the filming of a music video for his song "Closer" at the Santa Clarita Studios on 10 April 2008 in California (Credit: Matthew Simmons/WireImage)