When believers exchange the earthy for the heavenly -- when we stand perfected in His presence in glory -- we’ll be singing a new song of praise.
Revelation 5:9 And they sung a new song, saying, Thou art worthy to take the book, and to open the seals thereof: for thou wast slain, and hast redeemed us to God by thy blood out of every kindred, and tongue, and people, and nation;
I’m not sure what the words will be, but I do know that I’ll leave this world behind, and I'll stand in the presence of the blessed Lamb of God, open my mouth and sing that new song to Jesus in pure worship.
I look forward to that glorious day.