One of the more unexpected collaborations of recent times has resulted in a video by Mitch Ryan to send a shiver down your spine.It's not the first time that the veteran artist and producer John Cale has teamed with a younger female artist to great effect. There's Corner Of My Sky with Kelly Lee Owens - and that led to a brilliantly absurd video directed by Kasper Häggström, starring Michael Sheen.But Cale with Charli xcx is a different ballgame. On the track the viola he played in the Velvet Underground comes out for the first time in a while. And the video for House adds a great deal through the brilliance of its craft.A set of sumptuous Gothic portraits that investigates darkness and enforce the idea of Cale's psychological hold over Charli itself. Brilliant work by DoP Ben Carey - who has worked on most of the recent Charli videos - and Ryan, following his UKMVA-nominated collab with Charli on party 4 U.