High Mass may mean:
- Solemn Mass, a Tridentine Mass celebrated with deacon and subdeacon (international and general United States[1] usage)
- Missa Cantata, a sung Tridentine Mass without deacon and subdeacon (usage among some United States Catholics)
The renowned liturgist Adrian Fortescue declared that the Missa Cantata "is really a low Mass, since the essence of high Mass is not the music but the deacon and subdeacon".[2]
References

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