FoPP 017 1.II.9 The Chord Attack
Fundamentals of Piano Practice - A podcast by Chuang C. Chang / Henrik Pantle

Suppose that you want to play the (LH) "do-so-mi-so" quadruplet (“Alberti accompaniment”) many times in succession, very fast (as in the 3rd movement of Beethoven's Moonlight Sonata) ... http://www.pianofundamentals.com/book/en/1.II.9