The link below will take you to the YouTube page of the video of the National Lutheran Choir performing Randall Thompson's "Have Ye Not Known/Ye Shall Have a Song" based on the texts of Isaiah 40:21 and 30:29. Unfortunately embedding of this video is not allowed, so I can only provide the link. Many years ago we were in the Evangelical Choral Society of Grand Rapids, Michigan and this was one of the pieces we performed. It is very beautiful and I think if you love music at all, you will enjoy this.
"Have ye not known? have ye not heard? hath it not been told you from the beginning? have ye not understood from the foundations of the earth?" (Isaiah 40:21)
"Ye shall have a song, as in the night when a holy solemnity is kept; and gladness of heart, as when one goeth with a pipe to come into the mountain of the LORD..." (Isaiah 30:29)