Thirteenth Discretion

"Thirteenth Discretion" is a musical theme composed by Yoko Shimomura that appears in Kingdom Hearts Chain of Memories and Kingdom Hearts III.

Appearances
"Thirteenth Discretion" appears only during cutscenes, typically those involving Organization XIII.

Sora's Story

 * Castle Oblivion: "To Lose and Claim Anew", "Got It Memorized?", "When Sleeping Memories Awaken", "The Smiling Siren", "The Key to the Plot", "Larxene the Ruthless", "Vexen the Scientist", "Marluxia's Graceful Blade", "I Am Vexen", "Eliminate the Traitor", "Larxene's Sneer", "Axel's Dancing Flames", "Axel Vanishes", "Phantom Promise or Not-"
 * Twilight Town: "Memories That Bind", "Vexen's End", "Conspiracy of a Rebellion"

Reverse/Rebirth

 * Castle Oblivion: "The Organization", "The Other Hero", "One Who Walks in the Twilight", "Zexion the Tactician", "Vexen and His Replica", "Memories of Lies", "Obtaining Riku", "Lexaeus the Taciturn", "The Tactician's Move"

Kingdom Hearts III

 * Kingdom of Corona: "Marluxia's Request"
 * The Caribbean: "A Stride for All of Us"
 * Twilight Town: "Atonement"

Composition
"Thirteenth Discretion" is approximately one minute and twelve seconds long. "Thirteenth Discretion" does not have an introduction or conclusion, allowing for smooth transitions between loops. The instrumentation consists entirely of strings, with basses and cellos using bows, and half of the violins using pizzicato while the other half uses bows.