What genre would the music in this movie be?

i really like the music and song from a movie burlesque . it stars christina aguilera and cher. id like to know what genre it is or what categorie I the music from it falls in. I understand its kind of jazzy but I need something better to describe it. thanxxx

The movie, 'Burlesque' has a lot of music in it. In general the music sounds to me like a modern imitation of old standards and show tunes.