[Trixie:]  
From the brain that brought you the Big MacIntosh Caper  
The head that made headlines in every newspaper  
And wondrous things like the Celestia Bridge Job  
That cunning display that made Canterlot a sob  
Now comes the real tour de force  
Tricky and wicked, of course  
Trixie’s earlier crimes were fine for their times  
But now that she’s at it again  
An even grimmer plot has been simmering  
In my great criminal brain
 
[Chorus:]  
Even meaner? You mean it?  
Worse than the widows and orphans you drowned?  
You’re the best of the worst around  
Oh, Lulamoon  
Oh, Lulamoon  
The rest fall behind  
To Lulamoon  
To Lulamoon  
Equestria’s greatest criminal mind
 
[Trixie:]  
Thank you, Thank you. But it hasn’t all been  
champagne and caviar. I’ve had my share of  
adversity, thanks to that miserable second-rate  
detective, Princess Twilight Sparkle. For years, that  
insufferable pipsqueak has interfered with my  
plans.  
I haven’t had a moment’s peace of mind. But, all  
that’s in the past! This time, nothing, not even  
Twilight, can stand in my way! All will bow before  
Trixie!
 
[Chorus:]  
Oh, Lulamoon  
Oh, Lulamoon  
You’re tops and of course!  
To Lulamoon  
To Lulamoon  
[Rover:]  
To Lulamoon, Equestria’s greatest horse!
 
[Trixie:]  
What was that? What did you call me?
 
[Thug 1:]  
Oh, oh, he didn’t mean it, Trixie.
 
[Thug 2:]  
I-it was just a slip of the tongue.
 
[Trixie:]  
I am NOT A HORSE!
 
[Thug 3:]  
‘Course you’re not. You’re a unicorn!
 
[Thug 4:]  
Yeah, that’s right. Right! A unicorn.
 
[Thug 5:]  
Yeah, a unicorn!
 
[Trixie:]  
SILENCE! Oh, my dear Rover, I’m afraid that  
you’ve gone and upset me. You know what happens  
when somepony upsets me.
 
[Rover:]  
Oh, Lulamoon  
Oh, Lulamoon  
You’re the tops and of course!
 
(Oh dear.)
 
To Lulamoon  
To Lulamoon  
To Lulamoon, Equestria’s greatest -
 
[Ursa Major:]  
ROAR.
 
[Trixie:] Oh, Ursa, my precious, my baby. Did Mommy’s  
little honey bun enjoy her tasty __?
 
[Ursa:]  
Urp.
 
[Trixie:]  
I trust there will be no further interruptions?  
And now, as you were singing?
 
[Chorus:]  
Even louder  
We’ll shout it!  
No one can doubt what we know you can do  
You’re more evil than even you  
Oh, Lulamoon  
Oh, Lulamoon  
You’re one of a kind  
To Lulamoon  
To Lulamoon  
Equestria’s greatest criminal mind

it looks like ponykillerx style emulation

I always enjoy trixie/ twilight battles