Music is an art form that arranges sound to create some mixture of melody, harmony, form, rhythm or otherwise expressive content.

Classical music is being defined as Western art music of (and growing out of) the European tradition, normally notated and normally intended for public performance.

On the other hand, modern music is Western art music of (and growing out of) the modern age.

Music composers are people who write and arrange music.

While the Western classical music tradition is associated with elegance, sophisication and intellectual pursuits, modern music is often associated with energy, simplicity and emotion.

Frequent instruments in the Western orchestra include brass, strings, woodwinds and percussion.

An orchestra is a group of instrumentalists usually playing classical music; a symphony is an elaborate music composition for a full orchestra.

Philharmonic orchestras are the same size (and appear the same) as symphony orchestras on stage.

The third common orchestra type is a chamber orchestra, which is a frequently smaller one than both symphony and philharmonic orchestras.

Chamber orchestras are performed in rooms other than large concert halls and scaled down in size.

Pop music is a contemporary music form that appeals to a wide audience, which includes a danceable tempo, easy lyrics to remember and simple notation.

Frequently found on mainstream radio stations and across countless nations and cultures, pop music's influence on culture is undeniable.

Vocal techniques include riffs, runs, embellishments, melismas and vibrato.

African-American music has blues, gospel, jazz, rhythm & blues/soul, funk and hip-hop.

Urban contemporary music or urban music is a term heavily associated with African-American music featuring genres like rhythm & blues/soul, funk and hip-hop.

Both blues and gospel are similarly African-American music genres, which are bound up in resillence, despair, sorrow, loss, dreams and others, but also influence much of the American music.

Jazz is more lively and upbeat than blues.

Rhythm & blues combines pop, blues, gospel, jazz with a strong back beat; soul music uses a stronger gospel vocal style, though the lyrics are usually secular.

Soul music combines both blues and gospel.

Funk music is an aggressive African-American dance music form driven by syncopated bass lines and drumbeats and accented by instruments in rhythmic counterplay, all working toward a groove.

Rapping is a rhythmic delivery of poetic speech in rhyme.

Hip-hop is characterized by strong drumbeats and a rapping delivery.

Blue-eyed soul is rhythm & blues/soul music by Caucasians; brown-eyed soul is rhythm & blues/soul music by Hispanics.

Electronic music is a group of genres employing electronic music instruments.

Some electronic music genres include dance-pop, house, techno, electro, trance, electronica, electronic dance music (EDM), etc.

Progressive rock blends classical music with rock, jazz and others.

Teen pop is a pop music subgenre created and oriented towards teenagers and pre-teens.

Singers in soul music utilize big belt powerful voices, projecting far and giving off a more emotional contrast to a more technical sounding voice.

Oversinging is a term aimed at vocal styles that dominate the music they are performed in, including soulful riffs/runs, embellishments, melismas, vibrato, etc.

Independent music, also known as indie music or indie, is a music genre generally describing music circumventing mainstream conventions.

Krautrock is a rock music genre developed in Germany in the 1960's decade, which circumvents the rhythm & blues roots and song structure found in traditional Anglo-American rock music.

Post-punk, new age music, post-rock and others are influenced by krautrock.

Film scores are original music works written to accompany a film.

While many film scores are orchestral works rooted in Western classical music, many scores are also influenced by jazz, rock, pop, blues, new age and ambient music, plus ethnic and world styles.

Constantly, film scores are characterized by dramatic themes, sweeping melodies and lush orchestral arrangements and written by a composer.

Plus, film scores are performed by a group of musicians, like an orchestra, band or choir.

A march is an occasion in which large crowds of people walk through a public place to express their support for something, or their disagreement with or disapproval of something.

Plus, a march is a music piece with a jaunty, strong and regular beat written for marching to.

News music utilizes the rhythm of a teletype machine or ticker tape, together with two of the loudest instrumental groups in the Western orchestra: brass and percussion.

In short, news music uses the teletype rhythm, mixed with the clarion call of lively, piercing tones.

Stock music, also known as production music or library music, is recorded music being licensed to customers for use in film, television, radio and audio-visual presentations.

Usually, music is produced and owned by stock music libraries all around the world.

The corporate/industrial stock music category, which is either fully or semi orchestrated, captures the spirit of technology, enterprise and strength characteristic of the industrial community.

Plus, stock music's sports genre is powerful music that suggests competition; this includes traditional orchestrated pieces and more contemporary ones.

For larger stock music labels protected by copyright, they make copyrighted pieces.

With the production music industry experiencing proliferation in recent years, along with increasing competition, smaller stock music labels evolve the royalty-free music model.

Background music (BGM) is a music mode frequently played when there is no audience at all.

Corporate music, furniture music, incidental music, muzak and others are some BGM types.

Music videos are videotaped performances of a recorded popular song, frequently accompanied by dancing and visual images interpreting the lyrics.

Girls/women who are involved in urban contemporary music (rhythm & blues, soul, funk) use soulful riffs/runs, embelishments, melisma, growls, moans, breathy coos, belting and vocal cracks.

Plus, boys/men being involved in urban contemporary music (rhythm & blues, soul, funk) use soulful riffs/runs, embelishments, melisma, growls, moans, breathy coos, belting and vocal cracks.

What the top forty format means is that, in music, it is forty of the newest and most popular tunes in a particular genre, which is also used in radio; record charts have consisted of a list of forty tunes.

Frequent variants of the top forty include Top 10, Top 30, Top 50, Top 75, Top 100 and Top 200.

Plus, top forty/CHR is deemed suitable simply for young girls/women, but also positive, upbeat and flashy; young yuppies are likewise top forty/CHR fans.

In addition, though its precursor is the hit parade, top forty/CHR counters television's popularity.

Before the 1950's, many radio stations utilized a generalist network concept, but since the 1950's, they switched to the music-focused top forty/CHR format due to the high popularity of television.

Several events propelled early developments for this top forty/CHR radio concept, such as a portable transistor radio device, the baby boom generation reaching their teens, and the rock music boom.

Others propelled recent developments for top forty/CHR, including vehicle audio/car stereo.

Music licensing organizations include ASCAP, BMI, PRS, SOCAN, APRA, SACEM, GEMA, STIM, KODA, SIAE, SUISA, etc.

Famous music charts are the Billboard Hot 100, the RPM Top Singles, the UK Singles Chart, the Irish Singles Chart, the ARIA Charts, the Kent Music Report, Recorded Music NZ, etc.

The Production Music Association (PMA) represents all stock music labels.