diff --git a/desktop/resources/inside-castle/flex.ogg b/desktop/resources/inside-castle/flex.ogg
new file mode 100644
index 00000000..75472205
Binary files /dev/null and b/desktop/resources/inside-castle/flex.ogg differ
diff --git a/desktop/resources/inside-castle/flex.wav b/desktop/resources/inside-castle/flex.wav
new file mode 100644
index 00000000..f1ba58b5
Binary files /dev/null and b/desktop/resources/inside-castle/flex.wav differ
diff --git a/desktop/src-common/advent/screens/rooms/inside_castle.clj b/desktop/src-common/advent/screens/rooms/inside_castle.clj
index 0114cafb..3fd49ca8 100644
--- a/desktop/src-common/advent/screens/rooms/inside_castle.clj
+++ b/desktop/src-common/advent/screens/rooms/inside_castle.clj
@@ -65,6 +65,7 @@
                                                                              :game-player "I don't have the might or courage required to pull the sword and fulfill the prophecy. " 
                                                                              :game-player "The knights of Remington have muscles the size of tree trunks."
                                                                              :game-player "But me...")
+                                                            (sound! (sound "inside-castle/flex.ogg") :play)
                                                             (actions/play-animation entities :game-player :flex)
                                                             (actions/do-dialogue entities :game-player "I'd never be able to prove my strength."))
                                                   :choices actions/previous-choices}