The new concerto by John Williams, On Willows and Birches, can be heard in part on YouTube, in a promotional sort of video made with the harpist, Ann Pilot, the composer, John Williams, and the conductor, James Levine.
I believe it is likely to become a piece we will all have to learn and adopt as standard repertoire. It seems like an expansion of the harp writing he did in his movie scores, for better and not. I kind of wish Ann had told him