SAN DIEGO, CA—The 8.5-month-old fetus being carried by Betty Marin will be happy if it never hears Mozart's Piano Concerto No. 23 In A Major again.National News Highlights • Local • ISSUE 47•43 • Oct 24, 2011 000SAN DIEGO, CA—The 8.5-month-old fetus being carried by Betty Marin will be happy if it never hears Mozart's Piano Concerto No. 23 In A Major again.