Because music gets into our subconscious quickly and subtly, and because songs are a powerful medium for acquiring new knowledge and for reinforcing already-learned structures.
Songs activate learning in both hemispheres of the brain.
They appeal to multiple intelligences in every learner. Gloria Estefan and Michael Jackson to The Beatles, Stevie Wonder and many other old and new international favorites. Songs are flexible . They accommodate all learning styles , levels and student backgrounds. And they stick.