Best way to handle layered music with variations

Sorry I think my first post was not clear at all, so I will try to explain what I want to do.

In the game I work on, the music is affect by what happen to the player, for example if there is a happy moment, the music should reflect this moment. To simulate this behaviour I have several track, each one represent an emotion.

Let's take for example the first layer :

For this layer I had x tracks of 14 seconds, these tracks are divided into differents categories :

    -one track is an intro (always play once at the beginning of the level when the music start )
    -one track is the main track ( play after the intro and loop )

Then I have X variations of the main track, each variation represent an emotion and is trigger by some in game event. Each variation is divided in 3 tracks:

    - a transition track from main track to variation x (play only once before the variation)
    - a variation track ( play after the previous transition and loop until the end of the in game event )
    - a transition track from variation x to main track ( play only once after the variation end )

To achieve this I put all the tracks in a playlist with the following parameters ( synchronize clips and auto advance clips) and I write an FSM to control this playlist. The FSM use the QueuePlaylistClip function to break loop and play the next song.


So all of my 3 layers work like this and I just wanted to know if there is a better way to handle this kind of behaviour.

Thank you for your time.