The Bible says, "We will sing a new song to the Lord", which I prefer to understand. This new song means that I experience God's new grace every day and give him new praise instead of singing some new songs mechanically. You know, even if we sing a new song every day, if we don't have the grace of experience and inner praise, we can't praise God with "mouth singing and heart feeling".
Finally, I want to say: Because I am blessed by worship myself, I feel that instead of focusing on any poetry, I should focus on my personal pursuit of praising God. Obviously, God doesn't like acting. If there is a worship of God in life, voice is secondary.
Finally, worship has another meaning in the Hebrew Bible, that is, "being a slave" reminds us that true worship is not about singing any poem, but whether our lives have surrendered to God and become his slaves, which is far more important to God than any poem.
God bless you.