Hailed early by British critics as a major artist, soprano Rosalind Plowright has had a career of both significant successes and disappointing failures. Gifted with a voice of great promise, she too often seems to have been compromised by an unreliable technique. Her large, brightly colored top register and substantial middle range have, at their best, been components of an instrument of undeniable excitement. At other times, the voice has tended toward squalling and uncertainties of pitch, detracting from basically good vocal and dramatic instincts. For all her unevenness, sh...