Switch Letters Around or Change the Pitch of Music

This page is the CodyCross answer for the clue below from Physics, Group 1888, Puzzle 5 (Electrostatics).

Question is: Switch Letters Around or Change the Pitch of Music

and the answer is: TRANSPOSE

Word Meaning:

TRANSPOSE — (transitive) To reverse or change the order of (two or more things); to swap or interchange.

Definitions from Wiktionary.