In the music business, Brian Eno is a name to conjure with. He’s been the producer of tremendous hits by U2, Talking Heads, David Bowie, Grace Jones, Coldplay, and many other top artists. But he’s also a conceptualist, nicknamed Professor Eno in the British music press, and a foundational figure in ambient music—a genre whose very name Eno coined. Amanda Petrusich speaks with Eno about his two new albums that just came out, “Luminal” and “Lateral,” and his new book, “What Art Does.” “One of the realizations I had when I was writing this book is that really the only product of art is feelings,”  Eno says. “Its main point is to make your feelings change—is to give you feelings that you perhaps didn’t have before or did have before and want to have again or want to experiment with. So it seems very simplistic to say, ‘Oh, it’s all about feelings.’ But actually I think it is. Feelings are overlooked by all of those people who think bright children shouldn’t do art.”