Music of Africa

Given the vastness of the continent, the traditional music of Africa is historically ancient, rich, and diverse, with the different regions and nations of Africa having many distinct musical traditions.

Traditional music in most of the continent is passed down orally (or aurally) and is not written. In Sub-Saharan African music traditions, it also frequently relies heavily on percussion instruments of every variety, including xylophones, drums, and tone-producing instruments such as the mbira or "thumb piano."

The music and dance of the African diaspora, formed to varying degrees on African musical traditions, include American music and many Caribbean genres, such as Soca, Calypso (see kaiso) and Zouk. Latin American music genres such as the Bachata, Danzón, Samba, Rumba, Salsa, Tango, Cumbia, Bomba del Chota, Mambo, Merengue, Reggae, Compas, Milonga, Son, Guaracha, Punta, Cha-Cha-Cha, Plena, Conga, and other clave (rhythm)-based genres, were also founded on the music of enslaved Africans, and have in turn influenced African popular music.

Music radio

Music radio is a radio format in which music is the main broadcast content. After television replaced old time radio's dramatic content, music formats became dominant in many countries. Radio drama and comedy continue, often on public radio.

Music drives radio technology, including wide-band FM, modern digital radio systems such as Digital Radio Mondiale, and even the rise of internet radio and music streaming services (such as Spotify and Deezer).

How it works

The radio station provides programming to attract listeners. Commercial radio stations make profits by selling advertising. Public and community radio stations are sustained by listener donations and grants. Young people are targeted by advertisers because their product preferences can be changed more easily. Therefore, the most commercially successful stations target young audiences.

The programming usually cycles from the least attractive item, to most attractive, followed by commercials. The purpose of this plan is to build listener interest during the programming.

Music

Music is an art form and cultural activity whose medium is sound and silence. The common elements of music are pitch (which governs melody and harmony), rhythm (and its associated concepts tempo, meter, and articulation), dynamics (loudness and softness), and the sonic qualities of timbre and texture (which are sometimes termed the "color" of a musical sound). Different styles or types of music may emphasize, de-emphasize or omit some of these elements. Music is performed with a vast range of instruments and with vocal techniques ranging from singing to rapping, and there are solely instrumental pieces, solely vocal pieces and pieces that combine singing and instruments. The word derives from Greek μουσική (mousike; "art of the Muses"). In its most general form, the activities describing music as an art form include the production of works of music (songs, tunes, symphonies, and so on), the criticism of music, the study of the history of music, and the aesthetic examination of music. Ancient Greek and Indian philosophers defined music as tones ordered horizontally as melodies and vertically as harmonies. Common sayings such as "the harmony of the spheres" and "it is music to my ears" point to the notion that music is often ordered and pleasant to listen to. However, 20th-century composer John Cage thought that any sound can be music, saying, for example, "There is no noise, only sound."

Progressive house

Progressive house is a style (subgenre) of house music. The progressive house style emerged in the early 1990s. It initially developed in the United Kingdom as a natural progression of American and European house music of the late 1980s.

Etymology

In the context of popular music the word "progressive" was first used widely in the 1970s to differentiate experimental forms of rock music from mainstream styles. Such music attempted to explore alternate approaches to rock music production. Some acts also attempted to elevate the aesthetic values of rock music by incorporating features associated with classical instrumental music. This led to a style of music called progressive rock, which has been described as "the most self-consciously arty branch of rock."

In disco music, and later house music, a similar desire to separate more exploratory styles from standard approaches saw DJs and producers adopting the word "progressive" to make a distinction. According to the DJ and producer Carl Craig, the term "progressive" was used in Detroit in the early '80s in reference to Italo disco. The music was dubbed "progressive" because it drew upon the influence of Giorgio Moroder's Euro disco rather than the disco inspired by the symphonic sound of Philadelphia soul. In Detroit, prior to the emergence of techno, artists like Alexander Robotnick, Klein + M.B.O. and Capricorn filled a vacancy left after disco's demise in America. In the late 1980s, UK music journalist Simon Reynolds introduced the term "progressive dance" to describe album oriented acts such as 808 State, The Orb, Bomb the Bass and The Shamen. Between 1990 to 1992, the term "progressive" referred to the short-form buzz word for the house music subgenre "progressive house".

Radio

Radio is the use of radio waves is to carry information, such as sound, by systematically modulating some property of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.

Radio systems need a transmitter to modulate (change) some property of the energy produced to impress a signal on it, for example using amplitude modulation or angle modulation (which can be frequency modulation or phase modulation). Radio systems also need an antenna to convert electric currents into radio waves, and vice versa. An antenna can be used for both transmitting and receiving. The electrical resonance of tuned circuits in radios allow individual stations to be selected. The electromagnetic wave is intercepted by a tuned receiving antenna. A radio receiver receives its input from an antenna and converts it into a form usable for the consumer, such as sound, pictures, digital data, measurement values, navigational positions, etc. Radio frequencies occupy the range from a 3 kHz to 300 GHz, although commercially important uses of radio use only a small part of this spectrum.