Music written especially for the chapel at a north Wales castle has been performed for the first time in nearly 400 years.
Four hundred year old music will be heard in Chirk Castle
The 17th Century pieces lay undiscovered in the library of Chirk Castle until 1969 when they were sold at auction to an anonymous bidder.
It has taken experts at the University of Wales in Bangor five years to transcribe and edit the collection.
The music was sung at a chapel concert on Wednesday by the university's choir.
The concert included works by William Deane, who was the organist at Wrexham parish church.
The collection also included music by other composers for weddings, funerals and special events.
Kenneth Anthonisz from the National Trust said all the music has been written between 1550 and 1630.
"Quite a lot of the music pieces were written by people before they were well known," he said.
The scores include a Te Deum and Benedictus by Elizabethan composer John Mundy, who was organist at St George's Chapel, Windsor.
The 13th Century castle has been owned by the Myddelton family since 1595, but the current members decided to move to a private home to raise their children.
Built as a Marcher fortress during the reign of Edward I, it is run by the National Trust and attracts about 80,000 visitors each year.