Band, which began in 1938, is one of the longest running programs in CYO. Youngsters starting at grade four proceed in their musical education along three levels: Cadet (beginners) Band; Junior Concert Band for those with one year's experience in the Cadet Band or who possess training meriting Junior Concert status; and Concert Band, for students whose previous performances merit the higher status and for those that have adequately completed a performance examination. Seasonal concerts are scheduled, as well as contests.

The CYO band program is under the tutelage of Band Director Mr. David M. Little. David has a bachelor degree in music education and has been teaching band for a total of 25 years. Their philosophy is to have the band program represent itself through excellence in performance. This excellence can only be attained through discipline, hard work, sacrifice, dedication, and pride. The success as a group and as individuals is based on the willingness and determination to work to the best of each individual's ability. It is also important to have a sense of responsibility. This responsibility should not only be concerned with music, but should also be concerned with a feeling of obligation and loyalty best evident in presence, punctuality, and whole-hearted participation in the band. Each member is dependent upon the other for the success of the CYO bands.