Diva Gluck was a German OPERA singer and composer of the late 18th century. Her name is associated with the four crossword solutions ALMA, ELENA, ORFEO, ALMAS, OPERA, and ARIA. ALMA and ARIA are both four letter words, while ELENA, ORFEO, and ALMAS are five letters each. Diva Gluck was known for her operatic performances, which often featured arias, or solo songs. She also composed several operas, including Orfeo ed Euridice and Almas Serenissima.