On Console Edition, the Halloween mashup has cool title screen music that plays while loading into a world. However, on the bedrock version, the default title music plays. Then after leaving the end, the track that is supposed to play as the title theme plays as the credits theme.

How to fix:

In the sound_definitions.json file, change the "music game.credits" to "music_menu" then, after fixing MCPE-37528 copy the "music.game.end" and change it to "music.game.credits"