"ALEC WILDER: LULLABIES AND NIGHT SONGS." Jan DeGaetani, mezzo-soprano. Caedmon TC 1777. This record may appeal particularly to children: The 37 songs are short and simple; the lullabies sooth; the sound of guitars, recorders, celesta and harp paint a medieval hue. And songs that soprano Janet Baker might overwhelm, or which Marilyn Horne might varnish with too much gloss, DeGaetani lifts to a soft and graceful pedestal.