Official Explanation:Musicologist: Musical counterpoint – the playing of several melodic lines at the same time – is widely believed to have first been practiced in the 9th century. However, a recently discovered piece of music that uses counterpoint is inscribed with a date from the mid-700s. It must be that counterpoint was in use prior to the 9th century.
Which of the following, if true, most seriously weakens the musicologist’s argument? (A) The recently discovered piece of music is known to have been composed by a man who lived into the 800s.(B) Composers would, on occasion, add additional melodic lines to existing pieces long after the piece was originally written.(C) The church library in which the recently discovered piece was found had been in continuous use from 650 to 1220.(D) Some experts on early music believe that the reason for the belief that counterpoint started in the 9th century is based on insufficient evidence.(E) A great deal of music from the mid-700s uses techniques that were later incorporated into the musical counterpoint of the following century and beyond.Question Type: Weaken
Boil It Down: Musicologists previously assumed counterpoint was first used in the 9th century, but a recent discovery shows it was used before the 9th century. The musicologist argues that counterpoint existed before the 9th century.
Goal: Find the option that, if true, would best weaken the musicologist’s argument. Analysis:This question asks for a piece of information that would weaken the conclusion made by the musicologist.
Conclusion: It
must be that counterpoint was in use prior to the 9th century.
Evidence: A piece with counterpoint is inscribed with a date from the 700s.
If, as choice B states, composers would add melodic lines to older pieces, it could be that the piece dated from the 700s did not use counterpoint. This was added afterwards, perhaps during the 9th century or later.
(A) The recently discovered piece of music is known to have been composed by a man who lived into the 800s.
The fact remains that the piece was dated in the 700s, regardless of when the composer died.(B) Composers would, on occasion, add additional melodic lines to existing pieces long after the piece was originally written.
This is the correct choice. If this is true, then we cannot verify that the counterpoint notes were original to the piece - it could have easily been added later.(C) The church library in which the recently discovered piece was found had been in continuous use from 650 to 1220.
This is irrelevant to the conclusion.(D) Some experts on early music believe that the reason for the belief that counterpoint started in the 9th century is based on insufficient evidence.
If anything, this strengthens the conclusion.(E) A great deal of music from the mid-700s uses techniques that were later incorporated into the musical counterpoint of the following century and beyond.
The only technique that is under discussion is counterpoint. Other techniques are irrelevant.Don’t study for the GMAT. Train for it.