Johann Sebastian Bach
Prelude in A major, BWV 846 (The Well-Tempered Klavier, Book One)
The Well-Tempered Klavier, or preludes and fugues in all
tones and half-tones, as well with the major third or “A, D, E”,
than with the minor third, or “D, E, F”. For the use and benefit
of the young musicians who want to learn as well as for the entertainment
of those who are allready expert in art. - Anno 1722.