Cheek to Cheek performed by Louis Armstrong and Ella Fitzgerald is a good example of a Tin Pan Alley style arrangement. It includes the four bases of jazz: blue notes, syncopation, turn-around, and improvisation. Syncopation is obvious when Ella is singing because the percussion is louder and it is easier to tell that she is going off beat. The improvisation takes place in both singers solos, but even more so when they are singing off of each other. It is almost as if they are battling, but at the same time conversing through the music. Armstrong all improvises during him infamous trumpet solos. Tin Pan is about the arrangement of the music. This song starts off with just the piano and then layers the other instruments on top bringing in the percussion, but it still stays in the background of the song keeping the rhythm of the piece. Armstrong is the one actually performing the melody while the piano is the instrument providing another harmonic layer until Fitzgerald takes over and then the brass section is added with the trumpet. Then when Ella takes over the styling’s of each section pick up and starts to swing the notes as she swings the lyrics.