Dance to the Piper by Nora Roberts (1988)

As soon as I heard the beginning, I was afraid it was one of the many Nora Roberts' books I had read, but then I realized it was just the story one of the other Hurley sisters, and I had read at least one of the others. Maddy, the youngest of the O'Hurley Triplets, is a dancer on Broadway. She meets Reed Valentine, the investor in the show and of course they have quite a bit to work through, but you know how it ends...