the music that the marching band or drum and bugle corps is playing via the synchronized work of flags, sabers, rifles, the air blade, by dance, or by non-traditional equipment for example a trident if you were to do an Atlantis Show. The color guard uses different colors and styles of flags like swing flags and tapered flags to enhance the visual effect of the marching band as a whole. Color guard also may use backdrops to bring color and scenery to the field if the concept of the show is hard to interpret. The number of members in a color guard can range from a single person to over 50 members. This is often dependent on the size of the band, school or corps, the allotted budget, and the talent available among the potential members who try out. In drum and bugle corps, there used to be a requirement for a traditional presentation of the colors during the competitive show (called the "Color Pre"), but this fell out of favor around the early 1970s. High school marching bands kept it in until the late '70s. A recent example of a Color Pre in show was the 2002 San Francisco Renegades Sr corps, used during "America the Beautiful" to open their program, but such a presentation was not a required part of the show. There are many different types of spins and tosses that can be done with the flag. Each spin or toss creates a different illusion and can be used for different tempos. Basic color guard moves include Jazz runs (a Jazz dance move used as a graceful way to run across the marching band field or the gym floor), "right shoulder" (positioning the flag with the bottom of the pole by your belly button and your right hand by the flag's silk tape) and "stripping the flag" (holding the flag silk with your fingers so you won't reveal the color(s) of the flag.) Flag poles and silks both come in different sizes, and there are different shapes and textures for silks, as well. Flags frequently have weights -generally 1 in. carriage bolts or the like- in the bottom and top of the pole to make it easier to toss the flag into the air. However, even with the weights, weather conditions such as wind and rain can affect a flag's spin and disrupt a toss if not