The pipe organ at St. Aloysius Church sits high above the church floor, some of its pipes stretching all the way toward the ceiling of the big, old church surrounded by Gonzaga University’s campus. The floor vibrates, and the sound reverberates under the cathedral ceilings when Tyler Pattison sits down and plays the giant instrument with his hands and feet. The organ rumbles and whispers, sings thrills and crescendos, as air is pushed through its more than 2,000 pipes by a complicated system of vents and stops and bellows.