Chris has it at the GK.
R. Scott Clark
R.Scott Clark is the President of the Heidelberg Reformation Association, the author and editor of, and contributor to several books and the author of many articles. He has taught church history and historical theology since 1997 at Westminster Seminary California. He has also taught at Wheaton College, Reformed Theological Seminary, and Concordia University. He has hosted the Heidelblog since 2007.
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How influential was Edward Leigh? This seems like a significant work.
Anyone know much about him?
I found an online version here: http://rarebooks.dts.edu/viewbook.aspx?bookid=1494
He has an interesting section on the ordinance of Psalm Singing page 609