was to be different from all the others. The concept of Latin, or Spanish style uniform was agreed upon and the corps appeared for the first time in the trademark Caballero uniform competing in their first field competition in Trenton, New Jersey on July 20, 1947. Jim Costello's father, the late James Sr., was responsible for the design, largely inspired by a small corps in San Raphael, California with a similar uniform. Many elements combine to make up the huge impact that the Caballeros have on an audience. The compelling high caliber of performance is certainly a primary ingredient, as is driving Latin-style music, and horn lines and percussion arrangements. From the beginning, however, the one facet that has "sold" the Caballeros show, that has brought it all together more than any other single visual feature, is that uniform. More of a costume than a uniform, it consists of a black sombrero, a white satin shirt with bloused sleeves, a bright red satin sash, black bell bottom pants with large red pleats on the sides that open and sway as the corps moves through its patterns; black shoes, and white gloves. The uniform has remained virtually unchanged all these years; testimony to a timeless design. It is one of the corps' most notable trademarks. "The Rumps" Another trademark is the short, but dramatic introduction and finale that have been played in one form or another for nearly thirty years. Undoubtedly the most recognized theme music in all of drum corps, it can still be heard in subtle form in the corps' 1996 presentation. España Cani, played in its entirety beginning in 1957 and as an off-the-line introduction for many years thereafter, was originally arranged by Al Mura, and has been affectionately known through the years to corps members and their many fans as "The Rumps". The Hawthorne Muchachos The Hawthorne Muchachos, the Caballeros' famous junior corps, was formed in 1959 by the renowned Caballero drum major, Ralph Silverbrand. The impetus for forming the corps was primarily to extend the great world of drum corps to younger players in Hawthorne and surrounding communities, but a secondary benefit was to create a ready pool of talent which would eventually "graduate" into the Caballeros once members reached the age of twenty-two and "aged out" of the junior corps. The Muchachos wore the same basic uniform as the senior corps except for minor trim