The term 'Swinging Songs' is often used to refer to a genre of music that originated in the 1930s and 1940s. The term is derived from the style of jazz music that was popular during this time period, which featured a strong rhythm and a lot of improvisation. The crossword solution for this term is 'LILTS, ' which refers to a type of song that has a light, lilting melody. These songs are often characterized by their upbeat tempo and cheerful lyrics.