Leave it to a film about a family torn apart by Nazi activity to bring the best out of Radiohead's Philip Selway.
Back in the old days, when someone first took a violin bow to the flat end of a saw and listened to wobbles hum forth, did he or she imagine that this would one day become a fitting addition to a future genre of music known as ambient? No, of course not, what a silly thought. But when I hear a saw being played on Radiohead drummer Philip Selway's soundtrack for the film Let Me…