"During the later Middle Ages these processions developed into splendid pageants of devotion and honor to the Blessed Sacrament. They are still publicly held, and often with the ancient splendor, in Italy, France, Spain, Portugal, Austria, Belgium, Ireland, in the Catholic sections of Germany, Holland, Switzerland, Canada, Hungary, and in the Slavic countries and South America. Sovereigns and princes, presidents and ministers of the state, magistrates, members of trade and craft guilds, and honor guards of the armed forces accompany the liturgical procession while the church bells peal, bands play sacred hymns, and the faithful kneel in front of their homes to adore the Eucharistic Lord." — (Excerpted from Handbook of Christian Feasts and Customs, by Francis X. Weiser p261) my emphasis
The OP wants to make sure it's "legit" before proposing it to his pastor! I have only encountered full marching bands or brass ensembles elsewhere, but neither of those would be feasible for us.I don't understand the OP's reason for even questioning this practice.
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