Mabel Madness ***
By: Paulanne Simmons English-born cabaret singer Mabel Mercer had become the toast of Paris in the 1930s, where the likes of Ernest Hemingway, Gertrude Stein, F. Scott Fitzgerald and Cole Porter heard her at venues such as the famed Chez Bricktop. But it was after her arrival in the United States during World War II that she became the inspiration for many of America's greatest pop singers: Frank Sinatra, Tony Bennet…