Can't do a MIDI, but here are the lyrics. First section is to the tune of St James Infirmary. Rest seems to be original:

I went down to meet my connection, corner of 5th & McGee
Up come a city detective, here's what he said to me:
He said, "Young man, you'll soon lose your habit
down on our Lexington farm.
Take away your needle and your dropper, boy,
Won't let that do you no harm.
There'll be rivers of morphine solution,
cocaine to dry your veins,
goofballs by the handful, and the bennies will fall like rain.

And then one day they'll release you --
they'll say your treatment's done.
Half hour later, you'll be down on Decatur,
using a bicycle pump for a gun.
He said,"Young man...etc etc"