Help making a revolutional Script for ABS

[davedani]

I'm using Mr.Mo SBABS Lite, and I've been asking people for help on making a battle mode type of deal for an ABS. Possibly any ABS. This is my first Script and I really have no idea what I'm doing cause I only know how to modify small parts of other scripts. I'm trying to make this a step at a time, but let me explain what I was hoping it would do all together.

The Script would check to see if an enemy is in battle and Instantly Start Battle 1 of 3 battle Music at random. Then When the enemy is dead, the music would return to normal.
Also, If in battle with a Boss which will probably have some kind of variable or switch,  It would play Boss Battle Music. Here's what I have so far... I have no idea if any of this is right at all, but at least I'm trying.

If anyone could help, I'll be very greatful and I will credit anyone who helps.

if enemy.in_battle = true
#Random Music.
RAND_MUSIC = true
#Set Random Music.
MUSIC1 = "01 Declaration"
MUSIC2 = "Wild Child"
MUSIC3 = "08 For the Land of the Free"
end