这是转的:关于古典音乐介绍的英文文章Classicalmusicisabroadtermthatusuallyreferstomainstreammusicproducedin,orrootedinthetraditionsofWesternliturgicalandsecularmusic,encompassingabroadperiodfromroughlythe9thcenturytopresenttimes.[1]Thecentralnormsofthistraditionbecamecodifiedbetween1550and1900,whichisknownasthecommonpracticeperiod.Europeanmusicislargelydistinguishedfrommanyothernon-Europeanandpopularmusicalformsbyitssystemofstaffnotation,inusesinceaboutthe16thcentury.[2]Westernstaffnotationisusedbycomposerstoprescribetotheperformerthepitch,speed,meter,individualrhythmsandexactexecutionofapieceofmusic.Thisleaveslessroomforpractices,suchasimprovisationandadlibitumornamentation,thatarefrequentlyheardinnon-Europeanartmusic(compareIndianclassicalmusicandJapanesetraditionalmusic)andpopularmusic.[3][4][5]Thepublictasteforandappreciationofformalmusicofthistypewanedinthelate1900sintheUnitedStatesandUnitedKingdominparticular.[6]Certainlythisperiodhasseenclassicalmusicfallingwellbehindtheimmensecommercialsuccessofpopularmusic,intheopinionofsome[who?],althoughthenumberofCDssoldisnotindicativeofthepopularityofclassicalmusic.[7]Theterm"classicalmusic"didnotappearuntiltheearly19thcentury,inanattemptto"canonize"theperiodfromJohannSebastianBachtoBeethovenasagoldenage.[8]Theearliestreferenceto"classicalmusic"recordedbytheOxfordEnglishDictionaryisfromabout1836.[9][10]Manywritersfeelthat"classical"isaninappropriatetermformainstreamandavant-gardemusicwrittensincethelatterpartofthe19thcentury;hencethecommonusageofscarequotes.[11]