I have often repeated that there is no greatest composer (or singer, or pianist, or whatever). But J. S. Bach, the amazingly musical genius of the first part of the 18th Century, deserves to be granted special mention, and as an authority in the classical stream of music: the music that flows from harmony.
To some degree, even up to the time of Wagner, the inspiration for all music can be said to be classical harmony; the harmony which J. S. Bach developed and polished during his lifetime.
In the 65 or so years that Bach lived—as a student, a performer, a composer, and a teacher of music, he built a solid foundation of music; his own compositions, as well as adaptations of the music of others—that there would have been literally a whole library full of music for future generations to work on. But, alas, not all of it has survived.
There is a huge amount of misstatements and misunderstandings about the music of Bach: that it is dry, that it is merely intellectual, that it is difficult to play, that it is outmoded, and so on. All these statements are not entirely true; but they're subjective statements, and maybe true for some people.
Bach was born in the month of March. But at that time there were (at least) two calendars that were followed; the Julian Calendar, which was fairly useful, because the leap years adjusted for the length of the year not being exactly 365 days. (If not for leap years, Midsummer's Day would not fall on the longest day of the year. To most people, the test of a good calendar is that midsummer and midwinter would always fall on the same date.)
By the 17th Century, astronomers in Rome had concluded that, in fact, the Leap Years—February 29 once in four years—was overdoing it. By just a few minutes each year. The solution was to cancel a leap year every 100 years.
Now Bach lived in a part of Germany that was strongly Protestant. To them, any scheme invented by the Catholics in Rome was something they wouldn't stand for. So, when Bach was born in 1685, on March 21st, it was well into the summer, and not the Spring Equinox, which it should have been.
What are we to do? Should we celebrate the birth of our favorite composer on the date entered in the church register, or should we celebrate it on the date it would have been in the more accurate Roman Catholic world?
Well, March 21 is, today, the Equinox, so it is convenient to celebrate Bach's birthday on the Equinox. In the year he was born, it writing have been some weeks into the Summer, and we really could figure out what date it would have been in the rest of the world, but to hell with it. I will celebrate it on the Equinox, and what is more, if Bach were to be brought alive, he would be happy, because (not being an accomplished astronomer), he was very likely confident that his birthday was March 21, because that would have been what his family told him.
I repeat this story every year. And now my duty has been discharged. So I will plan a mini celebration for this Friday!
Archie