用英语介绍一下说唱音乐,拉丁音乐,Blues音乐.

The Blues is a vocal and instrumental form of music based on the use of the blue notes.It emerged as an accessible form of self-expression in African-American communities of the United States from spirituals,work songs,field hollers,shouts and chants,and rhymed simple narrative ballads.[1] The use of blue notes and the prominence of call-and-response patterns in the music and lyrics are indicative of African influence.
The blues influenced later American and Western popular music,as it became the roots of jazz,rhythm and blues,bluegrass and rock and roll.In the 1960s and 1970s,a hybrid form called blues rock developed from the combining of blues with various rock and roll forms.
Latin music,includes the music of all countries in Latin America (and the Caribbean) and comes in many varieties.Latin America is home to musical styles such as the simple,rural conjunto music of northern Mexico,the sophisticated habanera of Cuba,the symphonies of Heitor Villa-Lobos,and the simple and moving Andean flute.Music has played an important part recently in Latin America's politics,the nueva canción movement being a prime example.Latin music is very diverse,with the only truly unifying thread being the use of Latin-derived languages,predominately the Spanish language,the Portuguese language in Brazil,and to a lesser extent,Latin-derived creole languages such as those found in Haiti.
Although Spain and Portugal are not part of Latin America,Spanish music and Portuguese music are strongly cross-influenced with Latin music.
Gangsta rap,which is known in the east coast as Hardcore rap,is a term that was originated by the mainstream media to describe a certain subgenre of hip hop music which developed during the late 1980s.It is a genre of hip hop that reflects the violent lifestyles of some inner-city youths.Gangsta is a corruption of the word gangster.The genre was pioneered around 1983 by Ice T with songs like Cold Winter Madness and Body Rock/Killers and was popularized by groups like N.W.A in the late '80s' After the national attention that Ice-T & N.W.A created in the late 80's,gangsta rap became the most commercially lucrative subgenre of hip hop.
The subject matter inherent in gangsta rap has caused a great deal of controversy.Criticism has come from both left wing and right wing commentators,and religious leaders,who have accused the genre of promoting homophobia,violence,profanity,promiscuity,misogyny,rape,street gangs,drive-by shootings,vandalism,thievery,crime,drug dealing,alcohol abuse,substance abuse and materialism.
Some commentators (for example,Spike Lee in his satirical film Bamboozled) have criticized it as analogous to black minstrel shows and blackface performance,in which performers – both black and white – were made up to look African American,and acted in a stereotypically uncultured and ignorant manner for the entertainment of audiences.Gangsta rappers often defend themselves by claiming that they are describing the reality of inner-city life,and that they are only adopting a character,like an actor playing a role,which behaves in ways that they may not necessarily endorse.