I didn't know it was that hard.
There's a reason nobody has done it yet

It's An insane amount of work LOL
To give you an idea of the complexity of the task, let's try something:
Listen to any LBT song...say, Big Water (LBT 5).
When it starts off, what do you hear?
First of all, how fast is the song, Exactly? How many beats per minute?
What is the time signature of the song?
What key is the song in?
Drums, obviously. What kind of drums? How loud are they?
Some sort of guitar playing the lead part. What kind of guitar? How am I going to reproduce that sound using the tools I have? What notes is it playing?
Wait, there's more. There's a bass guitar in there, too. How loud is it? Hwo much is the low-end of the bass Equalized up? Is it bass-biased? Is it bright? is it plucked soft or hard? What notes is it playing? What rhythm?
Next, we have some cool guitar strumming effect....wait a minute, the pitch of the guitar Bends over this time! Where are the bends, what is the frequency of this oscillation? How Much does the pitch bend?
There is more than a simple drum beat on the drum set. Cymbals are in there every so often, too.
And that's an Easy one! There aren't many instruments....for the first 8 seconds

Then there's the Rest of the song?
Let's try another one: "Family" from LBT 8:
Simple start...for the 1st second or so...or is it?
How fast is the song?
Count the time signature, it doesn't start on beat 1! Wait, now we have to offset the first note so the rest of the song fits the time signature!
Now what do we hear? An electric piano on the melody...and the electric piano on bass, don't miss that!
At 2 seconds, a flute comes in with a side melody. How loud is it? Where is it panned in the stereo image (slightly to the right channel).
At 5.7 seconds an english horn (or similar instrument) comes in biased on the left channel. How loud is it? Does it fade in, fade out? Is the volume of every note the same on every instrument? No, it isn't!
What notes are all of these instruments playing?
Fast-forward to 0:36 and all sorts of new stuff starts happening! Strings, bass guitar, clarinet (did you catch the clarinet?

). The electric piano is still playing too. When do they play? How loud, stereo pannning, expression, etc.
It gets even uglier at 1:07!
Percussion comes in, guitars, flutes, oboes, bassoon, woodblocks, other percussion effects. What notes are they playing, when do they play, what volume, what playing style, are they playing loud-style or soft-style, or moderate style? Where in the stereo image are they? Also, you can't just have one "layer" for each instrument when programming the audio file. One needs multiple layers to reproduce the multiple kinds of expressions on each instrument to make it sound more realistic.
Nothing easy about it

LOL