Fragments of Sorrow

"Fragments of Sorrow" is a musical composition by Yoko Shimomura that appears throughout the Kingdom Hearts series.

Kingdom Hearts
"Fragments of Sorrow" primarily serves as the main battle theme for End of the World.

Kingdom Hearts II
"Fragments of Sorrow" primarily serves as the battle theme for the Dive to the Heart sequence during Roxas's story, but it also plays in specific cutscenes and events.

Cutscenes

 * Dive to the Heart: "The Keyblade"

Events

 * Dive to the Heart: "Defeat All the Mysterious Enemies" - The Dusks at the Station of Serenity.

Kingdom Hearts Re:coded
"Fragments of Sorrow" serves as the main battle theme for the Dive to the Heart world.

Kingdom Hearts χ[chi]

 * Main Story: "The Power of Friendship"

Kingdom Hearts Union χ[Cross]

 * Main Story: "The World's End", "Pure Light"

Composition
"Fragments of Sorrow" is approximately two minutes and eighteen seconds in Kingdom Hearts and Kingdom Hearts HD 2.5 ReMIX. In Kingdom Hearts II, the piece is reduced to one minute and sixteen seconds. In Kingdom Hearts HD 1.5 ReMIX, the piece is extended to two minutes and twenty seconds.

Super Smash Bros. Ultimate
In , the Kingdom Hearts HD 2.5 ReMIX version of “Fragments of Sorrow” appears as a used in stages. It is also heard during the  video presentation on Sora, where it is played while talks about Sora's three-hit combo attacks and Sora's reveal trailer, where it plays during the gameplay sequence.