Sigur Rós imposed a media blackout early in their career. They aren't the only cult group to run shy of the press.
Haunted by the suicide of the frontman Ian Curtis, the surviving members of Joy Division found it too painful to talk about his death. Hence their refusal to be interviewed for much of the 1980s, the period of their greatest commercial success.
In the 1998 tour rockumentary Meeting People Is Easy, Radiohead's Jonny Greenwood is seen flicking channels and yawning while conducting a phone interview with an unfortunate Australian journalist. In the years since, the group has done little to burnish its media-friendly reputation. So it was a surprise when singer Thom Yorke popped up on an American public radio show hosted by, yes, Alec Baldwin. Much hilarity ensued as Baldwin tried to deconstruct Yorke's pronunciation of Warp Records ("wawp wecods?," he asked. "What's wawp wecods?).
The electro-goth duo have been known to give the very occasional interview. But getting to that point can be fraught. One Irish journalist found himself negotiating with the group's tour manager, explaining where the feature would run, whether it would be available online, and within what time frame, before songwriter Ethan Kath consented to speak. When he did, he was a teddy bear.
Sitting down with Nordic pop singer Lykke Li, Day & Night was looking forward to a nice chat. Ms Li had other ideas, and spent most of the interview giving one word answers. She was so frosty it came off like a parody of pop star truculence and her interviewer had a job keeping a straight face.