
This one in via brian c. EM (Electronic Musician) has a series up on the history of electronic musical instruments. You can find
part 1 here. On the right of the site under the "Must Read" section you will find links to parts 1-4.
"The early years of electronic musical instruments set the tone for a century.
FIG. 1: Thaddeus Cahill's Telharmonium was installed in New York in 1906. It was transported from its home in Massachusetts in more than a dozen railway boxcars.
As we enter the 21st century, electronic music is fast approaching its 100th anniversary. This is a good time to look at our roots and get to know how we came to be where we are. This is the first in a series of four articles in which EM explores the instruments, artistic ideas, business concepts, musicians and entrepreneurs, and technical breakthroughs of the century—from the first technological achievements to the synthesizers of tomorrow.
The focus throughout the series is on the technologies that have been used by musicians to expand on the resources available in traditional, acoustic instruments. Where appropriate, each article will also document important musical compositions that have employed these technologies. There's a rich and deep tradition to uncover, so let's begin our journey!"