Dragon Quest 4: Chapters Of The Chosen Codes -

Alternate music on world map:
Have all eight characters join your party after defeating the Marquis de L�on in Chapter 5. Have the indicated character placements in your party to hear the corresponding music at the world map.

Chapter 1 World Map music: Ragnar at front of party. 
Chapter 2 World Map music: Alena, Kiryl, or Borya at front of party. 
Chapter 3 World Map music: Torneko at front of party. 
Chapter 4 Battle Music: Meena and Maya at front of party. 
Chapter 4 World Map Music: Meena or Maya at front of party. 
Chapter 5 Starting World Map Music: Hero at front of the party with one or more characters. 
Chapter 5 Ending World Map Music: Only hero in the party. 
Psaro's Theme: Psaro at front of the party in Chapter 6.