If anybody would like to try out the twelve-tone technique but feels that reading music theory is boring there's a simple shortcut.
The whole idea is that you create a row with all the twelve chromatic notes. One of each, so the row will be twelve notes long and has to be performed from start to finish before the next row can start. There are some mathematical variations you are allowed to do. Put your row into this tool and you get all the variations: https://www.musictheory.net/calculators/matrix (from left to right, from right to left, from the top to the bottom or from the bottom to the top).
Besides the aforementioned rules you are allowed to do whatever you want to the row. Instrumentation, rhythm, note length and octave is up to you.