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This article mainly describes the music track in question from an out-of-universe perspective. However, it should be noted that this song also exists within the Ace Attorney universe.

Klavier Gavin
Achtung, baby! Today, we play it my way!
Apollo Justice
(What's that... noise?)
Klavier Gavin
Sometimes you have to get on up in order to get down... to prosecuting!

"Klavier Gavin - Guilty Love" is a music track in Apollo Justice: Ace Attorney that is the character theme of Klavier Gavin. It is also an in-universe track by Gavin's band, the Gavinners.

The track returns in Phoenix Wright: Ace Attorney - Dual Destinies and the non-canon DLC episode Apollo Justice: Asinine Attorney in Phoenix Wright: Ace Attorney - Spirit of Justice for the same purpose. Notably, "Perceive - Surge, Eyes", "The Steel Samurai: Warrior of Neo Olde Tokyo", "Klavier Gavin - Guilty Love", and "Ringtone (Phoenix Wright)" are the only four tracks from the sprite-based games to be carried into the 3D games unchanged.

A vocal version of "Guilty Love" was released in the Gyakuten Saiban 4 Mini Soundtrack CD alongside a vocal version of "Apollo Justice - A New Era Begins!"


"Guilty Love" is a 2026 Gavinners hit single. It was also one of their last, due to the disbandment of the band after the fall of that year. When Klavier Gavin, the Gavinners' lead member, prosecuted cases in court, he would often have the song play in the background and even has it as his ringtone, as does Wesley Stickler. When a murder occurred during a Gavinners concert, Gavin had Apollo Justice play the song from an audio mixer to show that Daryan Crescend, the second guitar of the band, had made a mistake when playing it. This information later proved useful to Justice in court, when he revealed that Crescend had been the one to murder Interpol agent Romein LeTouse, injuring himself, with the incriminating gunshot audible during the band's performance of "The Guitar's Serenade".




Klavier Gavin's Theme - "Guilty Love"