A: Marshfield, Massachusetts, United States
On December 24, 1906 Canadian American inventor Reginald A. Fessenden made the first audio radio (as distinct from Morse code) broadcast of entertainment and music to a general audience, broadcasting from Brant Rock on the coast of Massachusetts. This is considered the beginning of amplitude modulation broadcasting, or AM radio.
The program included Fessenden playing the song O Holy Night on the violin and reading a passage, Luke Chapter 2, from the Bible. The main audience for this transmission was an unknown number of shipboard radio operators along the Atlantic Coast.