1.  But he seems to be responding to the understandable diminishing of his vocal resources with heightened intensity.

2.  Since the early days of the American musical, songwriters have championed singers of wildly diverse vocal resources.

3.  They require performers who have the vocal resources of opera singers as well as the text-projection skills of Broadway songsters, a rare combination.

4.  Though he had to husband his vocal resources strategically to get through it, Pavarotti did some impressive singing.

5.  He proves the ultimate white knight, combining stentorian vocal resources with sensitivity and beauty of line.