Pentecost, or Whitsunday as it is known as well, is usually celebrated with a glorious and beautiful High Mass, with a little bit more incense than usual in the censor, and maybe even a different SMELL of incense! The Priest, who is to transform ordinary Bread and Wine into the Body, Blood, Soul and Divinity of our Blessed Saviour, would wear simple but exquisitely embroidered and solemn vestments. It should be the same in the OF, and it IS when the OF is said properly and reverently, by the book, as it was meant to be. You would think that even the most dissident Priests would follow the rubrics on Pentecost....but wait, if they never at Easter (the most joyful celebration of the Church!), they most certainly will not at Pentecost. In fact, they probably see this as a score time to "experiment" with the liturgy, like they probably do every Sunday and festival Day. (In other words, it's time to act like a Pentecostal).
This is a great opportunity to throw red and white streamers around the Church, and to bounce around speaking gibberish, while Brother Jonz Idontknow rams out Come Holy Spirit (not the chant) on the electric Guitar, while the children's choir sings along with an accompanying piano. This is the precise moment to bring out the dancers, while "Let it Shine" is played with a slide-show projected on the sanctuary. Things typical of evangelical Protestant churches. "Oh no! Anything BUT Catholic"
Whereas, the God-centred (Christocentric) Mass will have chanting "Veni, creator Spiritus" or singing "Come, Holy Spirit Blest". Either in the EF or the OF.
Have a Blessed Pentecost, most dearest readers. Thou art in my prayers every day and night. Not many people like to listen to me, and I appreciate it that you actually take time out of your day to read what I have to say. Please pray to our Blessed Mother, the Mother of the Word Incarnate and ask her for prayers to the Lord most High! Please pray to St Joseph, foster Father to our dearest Lord and Saviour! Pray to St Peter and to St Margaret Mary Alacoque. Also, pray to St John Bosco and St Dominic Savio. May God Bless you much!