If it's fast, no I don't have enough piano technique. In that case, it's probably been done on some kind of synthesizer or sequencer. Then the score can then be printed out and so forth. ↗
For a while there, I was a stringer. The expression comes from the old habit of stringing together the column inches that you had written. They'd measure it and pay you 10 cents an inch for your printed copy. ↗