Spoken: Hello, children. It’s time for an important lesson with Professor Flans. This is 
four letters that people sometimes confuse for one: L M N O!

[I play this on the keyboard, so here are the tabs notes and the actual notes]
  G Bb C D C Bb G Bb C  Bb G
E--------------------------------|
B--------------------------------|
G--------------------------------|    4x
D--------0-----------------------|
A---1- 3---3-1-----1--3-1--------|
E-3-------------3----------3-----|
  G Bb C  D  G Bb C D D   G Bb C D D D  D D D D D
E----------|------------|------------|---------------------|
B----------|------------|------------|---------------------|
G----------|------------|------------|---------------------|
D---------0|--------0--0|--------0-0-0|-0-0-0-0-0----------|
A---1--3---|---1--3-----|---1--3-----|---------------------|
E-3--------|-3----------|-3----------|---------------------|

The notes for the “ohhhhhhh... L M N O" part are like this:

D F G A G F D F G F D   4x

Then back to the first thing and then the second thing and then the third thing and then 
first thing! Do it on the keyboard if you can.