In what stands as one of the boldest, most ambitious projects of his storied career, Waterboys auteur Mike Scott has collaborated, figuratively speaking, with the legendary Irish poet W.B. Yeats on the 14 songs of An Appointment With Mr. Yeats. “I love the way Yeats’ poems lend themselves to music,” says Scott. “But I also like Yeats as a guy — a dandified, opinionated, larger-than-life character. I feel a kinship to him.