The crossword solution for the term 'Goodnight Gal of Song' is Irene. Irene is a popular song written by Harry Tierney and Joseph McCarthy in 1919. It was first performed by Edith Day in the Broadway musical Irene, which opened on December 3, 1919. The song has been covered by many artists over the years, including Bing Crosby, Ella Fitzgerald, and Frank Sinatra. It is a sentimental ballad about a woman named Irene who is saying goodbye to her lover as he leaves for war.