Here is a great chart from Michael Buble. After a big and brassy opening the chart builds in layers, from solo Vocal and Bass, then a noodling Tenor sax, then the full rhythm section, then the lower reeds and upper reeds and finally the full band to a rousing finale. This is a fine arrangement for showcasing both your singer and the musicianship of your band. There are no sax doubles and the vocal key is Eb throughout.
