This is a three-CD set that includes all of Villa-Lobos’ moody Bachianas Brasileiras. The best known is the fifth, for soprano and eight cellos (well performed here), but there is a wealth hidden among the others. There are dance movements galore; the second builds to a wonderfully percussive and powerful final movement; the eighth, despite an upbeat old folk dance as its centerpiece, has a melancholic warmth that is irresistible. The flute and bassoon duet that makes up No. 6 is rich and expre…