Mountain Chief in the context of "Music recording"

Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording.

Acoustic analog recording is achieved by a microphone diaphragm that senses changes in atmospheric pressure caused by acoustic sound waves and records them as a mechanical representation of the sound waves on a medium such as a phonograph record (in which a stylus cuts grooves on a record). In magnetic tape recording, the sound waves vibrate the microphone diaphragm and are converted into a varying electric current, which is then converted to a varying magnetic field by an electromagnet, which makes a representation of the sound as magnetized areas on a plastic tape with a magnetic coating on it. Analog sound reproduction is the reverse process, with a larger loudspeaker diaphragm causing changes to atmospheric pressure to form acoustic sound waves.

Frances Theresa Densmore (May 21, 1867 – June 5, 1957) was an American anthropologist and ethnographer from Minnesota. Densmore studied Native American music and culture, and in modern terms, she may be described as an ethnomusicologist.

The Bureau of American Ethnology (or BAE, originally, Bureau of Ethnology) was established in 1879 by an act of Congress for the purpose of transferring archives, records and materials relating to the Indians of North America from the Department of the Interior to the Smithsonian Institution. But from the start, the bureau's visionary founding director, John Wesley Powell, promoted a broader mission: "to organize anthropologic research in America." Under Powell, the bureau organized research-intensive multi-year projects; sponsored ethnographic, archaeological and linguistic field research; initiated publications series (most notably its Annual Reports and Bulletins); and promoted the fledgling discipline of anthropology. It prepared exhibits for expositions and collected anthropological artifacts for the Smithsonian United States National Museum. In addition, the BAE was the official repository of documents concerning American Indians collected by the various US geological surveys, especially the Geographical and Geological Survey of the Rocky Mountain Region and the Geological Survey of the Territories. It developed a manuscript repository, library and illustrations section that included photographic work and the collection of photographs.

In 1897, the Bureau of Ethnology's name changed to the Bureau of American Ethnology (BAE) to emphasize the geographic limit of its interests, although its staff briefly conducted research in US possessions such as Hawaii and the Philippines. In 1965, the BAE merged with the Smithsonian's Department of Anthropology to form the Smithsonian Office of Anthropology within the United States National Museum (now the Department of Anthropology, National Museum of Natural History). In 1968, the SOA archives became the National Anthropological Archives.

The Marias Massacre (also known as the Baker Massacre or the Piegan Massacre) was a massacre of Piegan Blackfeet Native peoples committed by United States Army forces under Major Eugene Mortimer Baker as part of the Indian Wars. The massacre occurred on January 23, 1870, in Montana Territory. Approximately 200 Native people were killed, most of whom were women, children, and older men.

As part of a campaign to suppress Mountain Chief's band of Piegan Blackfeet, the U.S. Army attacked a different band led by Chief Heavy Runner, to whom the United States government had previously promised their protection. This resulted in public outrage and a long-term shift towards a "Peace Policy" by the Federal Government, as advocated by President Ulysses S. Grant. Grant kept the Bureau of Indian Affairs as a division of the Department of the Interior although the War Department was trying to regain control. He then appointed men recommended by various religious clergy—including Quakers and Methodists—as Indian agents, in hopes that they would be free of the corruption he had previously found in the department.

American popular music (also referred to as "American Pop") is popular music produced in the United States and is a part of American pop culture. Distinctive styles of American popular music emerged early in the 19th century, and in the 20th century the American music industry developed a series of new forms of music, using elements of blues and other genres. These popular styles included country, R&B, jazz and rock. The 1960s and 1970s saw a number of important changes in American popular music, including the development of a number of new styles, such as heavy metal, punk, soul, and hip hop.

American popular music is incredibly diverse, with styles including ragtime, blues, jazz, swing, rock, bluegrass, country, R&B, doo wop, gospel, soul, funk, pop, punk, disco, house, techno, salsa, grunge and hip hop. In addition, the American music industry is quite diverse, supporting a number of regional styles such as zydeco, klezmer and slack-key. Though these styles were not always in the sense of mainstream, they were commercially recorded and therefore are examples of popular music as opposed to folk or classical music.