"Why are you doing this?"
Out of the goodness of my heart... It's Christmas!!
"What's your ulterior motive... what do you have to GAIN??"
GLORY, and the undying friendship of other tractor collectors.
"What ELSE??"
I might discover a Christmas carol that I never even KNEW about!!
"Do you mean that you don't actually WRITE the music??"
No, the music you hear is a "midi" file. It is a set of instructions that tell the synthesizer in YOUR computer what notes to play.
"Where do midis come from??"
There are millions of them out there on the net!! Unfortunately, giving credit for them is difficult because whoever invented them left no space in the file where the name of the author could be placed.