Usually four or five strong, these sit at the back riser, standing tall. They are the screamers. When you look at a trumpet player in a big band, watch his face. He isn't just blowing air; he is fighting the brass, often playing in the extreme high register to cut over forty other musicians. They are the exclamation points at the end of a musical sentence.

Look closely at the sheet music on the stands. It isn't just notes; it is a battle plan. An arrangement tells the trumpets to be quiet for 32 bars, then explode like a bomb. It tells the saxes to play a run so fast that their fingers blur, only to stop dead on a dime.

Usually five players strong (two altos, two tenors, one baritone), the sax section sits in a curved row at the front. They are the vocal cords of the band. When they play in harmony, they create that rich, velvety "sax choir" sound. But look closer—the lead alto is the quarterback. If he moves his bell up or down, the entire section follows.