all singing, all dancing

Etymology
From the advertising posters used to promote the 1929 film  – Hollywood’s first all-talking musical (as opposed to partially talking, partially silent) – which proclaimed the film to be “All Talking All Singing All Dancing” – see. In full, the poster reads: METRO-GOLDWYN-MAYER’S ALL TALKING ALL SINGING ALL DANCING PICTURE THE BROADWAY MELODY

Adjective

 * 1) Having many features, options or extras; sometimes used ironically to imply that the added features are just gimmicks.
 * 2) * 2024, Jeremy B. Rudd, ''A Practical Guide to Macroeconomics, p. 228
 * 3) * In fact, an all-singing, all-dancing DSGE model implies that relative to zero, a 2 percent inflation target costs the economy roughly $385 billion every year.
 * 1) * In fact, an all-singing, all-dancing DSGE model implies that relative to zero, a 2 percent inflation target costs the economy roughly $385 billion every year.