About

The Rational Grapes is a humanistic website created by me, Lily, and my associate, Monica. Its main purpose is to challenge irrational behavior and encourage the pursuit of knowledge. Here, you will find information regarding philosophy and music especially, but also art and gardening. The site is called The Rational Grapes for no reason other than my value of rationality and affinity for grapes. Please feel free to comment on anything and add to the discussion.

Thursday, July 21, 2016

Arrangement: Ranz des Vaches (from William Tell) by Gioachino Rossini

(L) Arranged for flutetunes.com using MuseScore.

About: The William Tell Overture is the overture to Gioachino Rossini's famous opera William Tell, or Guillaume Tell. It is composed of four parts (not movements, as they flow directly into each other): Prelude, Dawn; Storm; Ranz des Vaches; and Finale, March Of The Swiss Soldiers. While the whole overture is quite famous, the Ranz des Vaches and Finale are especially well known, used in many cartoons. This part is usually used to show daybreak or morning. A Ranz des Vaches (or Kuhreihen) is actually a simple melody played on the horn by Swiss Alpine herdsmen. Below, I have arranged the full orchestra piece for a flute trio, with flute 1 and 2 being the flute and English horn parts, respectively.

First page, linked to PDF:

Arrangement: Nocturne in C-sharp minor by Frédéric Chopin

(L) Arranged for flutetunes.com using MuseScore.

About: This piece is a widely known piano Nocturne of Chopin's, still performed today. Also called Lento con gran espressione, the work was published after Chopin's death. It is known mainly from The Pianist. I have arranged it for flute and piano.

First page, linked to PDF:

Thursday, July 14, 2016

APMT #1: PRACTICE

Here are some practice questions that go with the first episode. Watch the video first then answer the questions below.

Question 1: Label the parts of the wave shown below.


Question 2: Assuming the scales of the images below are the same, which wave has the highest frequency? Which one has the lowest frequency?


Question 3: Match each audio file with the image that best represents it.

Audio 1:

Audio 2:

Audio 3:


Image A:

Image B:

Image C:


Question 4: What is the formula used to depict sound waves?


For questions 5-8, use the graphs to find the frequency of the sound depicted.
Question 5:


Question 6:


Question 7:


Question 8:


Answer 1:

Answer 2: Highest frequency: green. Lowest frequency: yellow.
Answer 3: Audio 1, Image B; Audio 2, Image C; Audio 3, Image A
Answer 4: y=sin(2 * pi * frq * x)
Answer 5: 3 Hz
Answer 6: 8 Hz
Answer 7: 300 Hz
Answer 8: 610 Hz

Wednesday, July 13, 2016

APMT #1: The Wave and Pitch

(L) This is the first episode of this series. On the exam, you really don't need to know about the wave and the mathematical modeling of pitch, but I find it to be pretty interesting.