Syncro Start is a very easy piece that I used almost every year as the first band piece for my new class of beginners.
It is built around a simple five note melody, which all instruments play at some point in the piece.
In addition, each section has one other part to learn, which is played while another section has the melody.
This piece is designed to build the confidence of first year players in their ability to learn a band piece fairly quickly, and having it sound "ready to perform" soon after they begin working on it.