Catholic? Far from it! If one wants to dance and clap to a secular song inside a church, go visit your Baptist, Pentecostals and you can have all you want. As for "True" Catholicism, and Reverence and Catholic TRADITION which St. Paul tells us to HOLD ON TOO, get far away from this sort of thing, which is nothing but Protestanism. GO TO A LATIN MASS, where God's house is homored with His presence, where it is revered, where it is respected and honored and where the "true" Mass is said. If you want to see a musical, go for it, but Not in God's house!