The posting of quotes by human authors does not constitute agreement with either the quotes or their sources. (I try to confirm the sources that I give, but may miss on occasion; please verify when possible.)
"How sour sweet music is, when time is broke and no proportion kept." -- William Shakespeare
"A choir is made up of many voices, including yours and mine. If one by one all go silent then all that will be left are the soloists." -- Vera Nazarian
"If the lyrics in our worship songs do not move us without music, then we are being moved by music and not by the beauty of Christ in the gospel." -- Marshall Segal
"Communal singing draws forth “beauty beyond ourselves that we get to see, get to participate in.”" -- Bob Shoup
"Singing is for teaching. Praise is for instruction. Adoration is for admonishing." -- Bobby Jamieson
"Cappella – as in a cappella – has two a’s, two p’s, and two l’s. Stick a “c” and an “e” in there somewhere and you’ve got it. Capella is a goat."
"It is better to leave your fellow singers wishing the song had gone on longer than to have them wishing you had stopped!"
"The Sacred Harp tradition is both archaic and living, which inter-dependency is what makes it so compelling and unique." -- David Fetcho
" Sacred Harp is the truest and purest form of religion that I have ever experienced." -- Clarke Lee
"Tradition means giving votes to the most obscure of all classes, our ancestors. It is the democracy of the dead. Tradition refuses to submit to the small and arrogant oligarchy of those who happen to be walking around." G. K. Chesterton (not exactly a music quote, but applies well to traditional music)
"Behold their sitting down, and their rising up; I am their musick." -- Lamentations 3:63