What is the Meaning & Definition of musicology

Musicology is the discipline that deals with the study of theory and music history, i.e. the musicology will be responsible for all music-related phenomena: from the history, through its relationship with human beings and society, among other issues. It is a vast discipline, which houses not only different branches but also different schools with their own points of view in analyzing its object, which is none other than the music, his subject of study. The history of music or historical musicology, as it is also called, is a matter within musicology which will deal unravel just how music has developed through the centuries. This sub-branch thrives on documents such as: manuscripts, works of composers, biographies of authors, the relationship between words and music and between the latter and the society in question.
On the other hand, ethnomusicology, is that branch who studies music at the cultural context in which develops, therefore, is that it requires that ethnomusicologist note music corresponding in situ in the place in which is given, probably, then be faithful with the conclusions will require the recording and subsequent transcription of music as well as interviewing the musicians who interpret it.
And the theory of music, will be the branch which describes the elements of music, development and use of methods to compose and analyze the music from musical notation from the sound itself.