The 13th Anthology

The 13th Anthology is one of four Kingdom Hearts tracks in the album Drammatica, a compilation of Yoko Shimomura's musical pieces from her works in various Square Enix games.

The 13th Anthology is essentially a compiled orchestration of the major pieces that represent Organization XIII throughout the series. These tracks all share at least a segment of the melody of Another Side and thus are included.

Songs included in 13th Anthology
The score includes noticeable elements from:

The first piece then reprises as the last piece at 6:10.
 * Another Side; used in the Kingdom Hearts Final Mix Secret Movie: Deep Dive, which introduces Organization XIII.

Based on the first portion of Another Side.
 * Organization XIII; Theme music of Organization XIII in Kingdom Hearts II.

Plays at 1:01.
 * The 13th Struggle; Boss theme of all Organization Members in Kingdom Hearts: Chain of Memories, excluding Marluxia. Also, repeated when Roxas battles Axel and when Sora battles Luxord, either on their original Battle or as a Data Battle in Kingdom Hearts II Final Mix.

Plays at 2:10.
 * The 13th Reflection; Boss theme of the five Absent Silhouettes from Kingdom Hearts II Final Mix.

Plays at 2:51.
 * Graceful Assassin; Boss theme of Marluxia's First Form in Kingdom Hearts: Chain of Memories and Re:Chain of Memories. Highly based off and similar to, but not to be confused with, Another Side.

Plays at 3:15 following the pause after Graceful Assassin.
 * The 13th Dilemma; Boss theme to fights with Organization XIII Members; Demyx, Xaldin, Xigbar, and Saïx. Based on the faster portion of Another Side.

Plays at 4:06.
 * Lord of the Castle; Boss Theme of Marluxia's Third and Final Form, exclusive to Kingdom Hearts Re:Chain of Memories.