The link to the pdf can be found here https://www.dropbox.com/scl/fi/rfc62pq0fnu6v1zm2ip65/Children-Of-Sanchez.pdf?rlkey=ia1jpfeiqcyhzlb9aqbjtz3be&dl=0
The original recording can be found here https://open.spotify.com/track/63TIpBLodqnjVyKFoQPyQ0?si=h4lTmydRQvKQT3w1WPHngg
All credits to the Masses Band of His Majesty’s Royal Marines.
Played by Mark Upton in this recording I believe.