--Kochou's dream is slightly different in the four dubs--there it is a mirror image to what actually happens in the episode

--Yami does not say anything to the Rockets in the four dubs

--Tristan keeps his name in all four dubs, but his last name changes to something appropriate in the target language

--The Rockets try different (but safe) torture methods in the four dubs

--The Eight Melodies are reworded differently in all four dubs:

Spanish:

Toma una melodía (Take a melody)
Fácil que hacer (Easy to do)
Darle palabras (Give it words)
Y armonía (And harmony)
En voz alta (Out loud)
Todo el día, amor es fuerte, (All day, love is strong)
Canta una melodía de (Sing a melody of)
Amor, amor (Love, love)

French:

Prendre une mélodie (Take a melody)
Une chose facile (An easy thing)
Lui donner les mots (Giving it words)
Et l'harmonie (And harmony)
Ma voix chante (My voice sings)
L'amour devient plus fort tous les jours (Love grows strong every day)
Chanter une mélodie de (Sing a melody of)
Amour, mon amour (Love, my love)

German:

Eine Melodie (A melody)
Einfach wie möglich (Simple as can be)
Da ein paar Worte (Given some words)
Und Harmonie (And harmony)
Erhobener Stimme (Raised voice)
Liebe stärker, jetzt jeden Tag (Love growing stronger, every day now)
Singen eine Melodie von (Sing a melody of)
Liebe, ist es Liebe (Love, it is love)

Italian:

Una melodia (A melody)
Facile da fare (Easy to do)
Dare parole (Give words)
E l'armonia (And harmony)
La mia voce (My voice)
Cresce forte, con amore (Grows strong, with love)
Cantare melodie di (Sing melodies of)
L'amore, ora (Love, now)

--"I Believe in Happy Endings" is kept in all four dubs. The German version has some English lyrics mixed in