MONDAY, MAY 9 "Italian Spring: A Concert of Madrigals" presented by Amaryllis: Vermont’s Early Voice, Susanne Peck, director. 7:30 p.m., at St Stephen’s Episcopal Church, on the Green in Middlebury. The a capella ensemble will perform 16th-century works by Marenzio, Lassus, Palestrina, Gabrieli and others, capped by an early 17th-cent. suite of madrigals, 'La Sestina,' by Claudio Monteverdi. Suggested donation $15. For more information: call Susnne 453-3513 or visit www.amaryllisvt.org