It's good when someone says, "Would you write a song for this purpose," or "would you record a song for this purpose," or "would you help me realize this song," again, for this purpose.
To me, the best purpose of an interview would be to illuminate some things about how somebody works for the benefit of somebody else who wants to do those things. And that's not where most interviews go at all, so to me, they seem like strange exercises in small talk and wasted air.
