Apple’s services boss Eddy Cue has given a rare interview in which he talks about what the company is doing with the recently-launched iTunes Radio. The most interesting point: “There’s a Justin Timberlake album that’s on iTunes Radio as of [last Thursday] for the first time, so the first time we ever premiered an album on there,” says Cue. “It’s a huge improvement to do it on iTunes Radio because you don’t go to a store a lot. Hopefully lots of people will be listening to iTunes Radio a lot; from a discovery perspective it’s significantly better. I think when you go to a store and you go to the Justin Timberlake page and stream it from there, that’s great but that means you went to the store. iTunes Radio lets you discover it without you having to think about it.” One key metric to watch – and not just for JT – is how much iTunes Radio sparks sales on the iTunes Store in the coming weeks and months, as that’s a key part of Apple’s pitch to labels for the new service.