As the accuracy of our playback system has steadily increased over the years, the flaws in the human voice have started to bother us, particularly in the high-midrange/low-treble. At first we thought it was caused by CD PCM, but because it only happens on some CDs, we eventually concluded that it's due to improperly trained singers. So it was with some hesitation that we ordered a choral work, expecting to be put off by the grittiness. But there is none. The singers are pitch-perfect, clear, and sweet. A delightful recording.