The first act of "Song and Dance" is pretty much non-stop singing for its lead actress. She's the only one on stage for the approximately 1-hour act as well, with "Unexpected Song" probably its most memorable power ballad. Bernadette Peters was terrific when I saw her in it. She then appeared at the very end of the second act for its finale, if I recall correctly. That might be comparable in terms of sheer amount of singing to "Funny Girl" in its vocal demands.