The Heart of the Matter

But how?! How do you know that name, Iris?

— The Adventure of the Unspeakable Story

"The Heart of the Matter" is a music track in The Great Ace Attorney: Adventures and The Great Ace Attorney 2: Resolve used during investigation chapters. Similarly to "Heart of the Investigation" themes from other games in the Ace Attorney series, it plays during crucial moments in an investigation, such as when Iris Wilson said Kazuma Asogi's name after translating Magnus McGilded's music box disk in The Adventure of the Unspeakable Story.

The Great Ace Attorney: Adventures music
The Great Ace Attorney: Adventures Original Soundtrack	Ryunosuke Naruhodo - Overture to Adventures · The Adventure of the Great Beginning · Jingle - The Curtain Rises · The Defendants' Antechamber · Reminiscences - Ryunosuke's Flashback · The Great Ace Attorney - Court is Now in Session · The Witnesses Take the Stand · Great Cross-Examination - Moderato · Kazuma Asogi - Samurai on a Mission · A Great Twist - Suspense I · Machinations and Deductions · Great Cross-Examination - Allegro · Ryunosuke Naruhodo - Objection! · A Great Twist - Suspense II · The Truth Revealed (Adventures Version) · Foreboding · Complications in the Proceedings · Reminiscences - Sympathy for the Sinner, but Not the Sin · Elegance...and Excellence · Susato Mikotoba - A New Bloom in the New World · The Adventure of the Unbreakable Speckled Band · The Heart of the Matter · The SS Burya · A Migrating Russian Breeze · Investigation · Dance of Deduction (Type A) · Dance of Deduction - Backstage (Type A) · Dance of Deduction (Type B) · A Battle of Wits - Opening Moves · A Battle of Wits - Breakthrough · Reminiscences - Fallen Angel · Kazuma Asogi - Nocturne · The Adventure of the Runaway Room · Jingle - Intermission · Prologue - A Most Mysterious Mood · Herlock Sholmes - Great Detective of Foggy London Town · Theme of Deduction - At the End of a Chain of Logical Sequences · Dance of Deduction - Backstage (Type C) · Dance of Deduction (Type C) · Jingle - Deduction Complete · Lord Chief Justice Stronghart - Time-Keeper of the Law · Citizens of the Fog - Suspicious Folk · Barok van Zieks - The Reaper of the Bailey · Summation Examination · Gina Lestrade - A Blast from the East End · A Great Blaze · London Town · Tobias Gregson - The Great Detective's Great Foe · Local Prison - Rhapsody in Gloom · Soseki Natsume - I Am Not Guilty · Ordinary Londoners, Ordinary Lives · Arrival · 221B Baker Street · Iris Wilson - Young Biographer · A Farcical Comedy - Boisterous Folk · The Great Detective's Morose Mood · Music Box - A Novel, New Sound · Music Box - Great Detective of Foggy London Town · One Last Tragedy · The Great Ace Attorney - Adjudication · Pursuit - A Great Turnabout · Reminiscences - An Ashen Waltz · Victory - In Honour of My Friend · Susato Mikotoba - Serenade · Daybreak Over the Unspeakable Story · Curtain Call Suite - Adventures' End · Curtain Call Suite - The Great Ace Attorney Continues Forth

The Great Ace Attorney 2: Resolve music
The Great Ace Attorney: Adventures Original Soundtrack	Ryunosuke Naruhodo - Overture to Adventures · The Defendants' Antechamber · Reminiscences - Ryunosuke's Flashback · The Great Ace Attorney - Court is Now in Session · The Witnesses Take the Stand · Great Cross-Examination - Moderato · Kazuma Asogi - Samurai on a Mission · A Great Twist - Suspense I · Machinations and Deductions · Great Cross-Examination - Allegro · Ryunosuke Naruhodo - Objection! · A Great Twist - Suspense II · The Truth Revealed (Adventures Version) · Foreboding · Complications in the Proceedings · Reminiscences - Sympathy for the Sinner, but Not the Sin · Elegance...and Excellence · Susato Mikotoba - A New Bloom in the New World · The Heart of the Matter · Investigation · Dance of Deduction (Type A) · Dance of Deduction - Backstage (Type A) · Dance of Deduction (Type B) · A Battle of Wits - Opening Moves · A Battle of Wits - Breakthrough · Reminiscences - Fallen Angel · Kazuma Asogi - Nocturne · Prologue - A Most Mysterious Mood · Herlock Sholmes - Great Detective of Foggy London Town · Theme of Deduction - At the End of a Chain of Logical Sequences · Dance of Deduction - Backstage (Type C) · Dance of Deduction (Type C) · Jingle - Deduction Complete · Lord Chief Justice Stronghart - Time-Keeper of the Law · Citizens of the Fog - Suspicious Folk · Barok van Zieks - The Reaper of the Bailey · Summation Examination · Gina Lestrade - A Blast from the East End · London Town · Tobias Gregson - The Great Detective's Great Foe · Local Prison - Rhapsody in Gloom · Soseki Natsume - I Am Not Guilty · Ordinary Londoners, Ordinary Lives · 221B Baker Street · Iris Wilson - Young Biographer · A Farcical Comedy - Boisterous Folk · The Great Ace Attorney - Adjudication · Pursuit - A Great Turnabout · Reminiscences - An Ashen Waltz · Victory - In Honour of My Friend · Susato Mikotoba - Serenade

The Great Ace Attorney 2: Resolve Original Soundtrack	Ryunosuke Naruhodo - Overture to Resolve · The Great Ace Attorney Continues Forth (Music Box Excerpt) · Jingle - The Curtain Rises (Resolve Version) · Prelude to the Blossoming Attorney · Ryutaro Naruhodo - Objection! · Raiten Menimemo - One Journo's Menimemoism · William Shamspeare - Back Alley Bard · Reminiscences - Killers' Crossroads · The Great Exhibition · Professor Harebrayne - Student of Science · The Waxwork Museum · Madame Tusspells - Mysteries Encased in Wax · Reminiscences - Disproved Formulas · Doctor Sithe - Untouchable Coroner · Enoch Drebber - Rondo of Science and Magic · Murky Murderous Intentions · The Professor - A Spectre Revived · His Glorious Return · A Prosecutor, Reborn · The Legend of the Baskervilles · The Prison Warders · Swirling Void of Nothingness · Reminiscences - In Search of Family · The Great Detective's Great Friend · German Song 'Ode an die Wut' · Jingle - Intermission (Resolve Version) · The Defendants' Antechamber (Variation) · The Great Closed Trial - Court is Now in Session · The Reminiscences of Barok van Zieks · A Battle of Wits - Backstage (Partners Version) · Partners - The game is afoot! · Reminiscences - The Fruits of Ambition · Prelude to Pursuit · Great Pursuit - The Resolve of Ryunosuke Naruhodo · The Great Gateway to the Truth · Victory - One Last Great Win · The Great Ace Attorney Continues Forth (Music Box) · Our Separate Paths · Words of Parting - His Last Bow · Curtain Call Suite - Treasured Melodies · Grand Finale - Epilogue