First you need to make a whole which has got the same size of the bar into the plastic stool.
When you are done with it, put the bar into the hole and than fix it with 1 or 2 screws.
When the bar is fixed to the stool start coloring it.
I used only red, because I wanted to have the simple black-red-white combination.
Now make a hole in one of the records and then tread it to the bar. Put the 2nd record under the first record and then glue it to the stool.
Glue the ornamental border to the stool and to the lamp shade.
Put the lamp shade to the bar and put one of your favourite ear-phones to the lamp shade ... and you are done, with your music chair.