Name That Tune - Ad Lab Bonus Mystery Cache

This is a bonus cache for the 'Name That Tune' Adventure Lab cache in East Leake.  

To claim a find you must find and sign the log.

The Completion Message for the stages of this Adventure Lab will provide you with letters - Solve the anagram and enter the capitalised keyword into Certitude to reveal final coordinates and lock code for the bonus cache.  You will need a LADDER to access it.

You will then need to solve the field puzzle to access the log.  You must sign the log to claim a find.

Please replace everything as found. Particularly the padlocks. The one marked OUT should be on the outside and the one marked IN on the inside  

You can validate your puzzle solution with certitude.