GUILFORD, Vt. -- For the past several years, Friends of Music at Guilford, now in its 47th season, has been presenting an "A Cappella à la Carte" evening as the finale to its annual calendar. This year, the Guilford Chamber Singers are featured in "Melodies Steal Into My Heart," the musical segment of the evening's three-part menu. The setting is Guilford Community Church, just a short distance from Exit 1 off Interstate 91.