Shadowing Practice: Why California's musical road sounds terrible - Learn English Speaking with Video
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39 sentences
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1
If you drive down a certain stretch of highway in the California desert, you will hear music.
2
It's supposed to sound a little bit like this.
3
But instead, it sounds like this.
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That was the musical road of Lancaster, California, and as you may have heard, it's a little bit out of tune.
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A lot of money was spent on that road.
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It was a publicity stunt for a car company who wanted to show off how clever they are.
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And doing the calculations for something like that isn't really difficult.
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A musical note is a vibration in the air at a particular frequency, and those vibrations can be made by a violin string or synthesized by a computer,
9
or, in this case, made by vehicle tyres hitting grooves in the road.
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The closer the grooves are, the faster the vibrations, and the higher the note.
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So take the speed limit, divide by the frequency of the note you want, and that's how often there should be a groove in the road.
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And if people travel at the wrong speed, well, it shouldn't really matter.
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It'll just be like slowing down or speeding up any other bit of music.
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It'll be in the wrong key, but it'll still sound right to most people's ears.
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It won't sound like that mess.
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So, what went wrong?
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At this point, I'm indebted to David Simmons Duffin, an assistant professor of physics at Caltech, whose interests include quantum field theories and playing Baroque violin,
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because he was, as far as I can tell, the very first person to figure out what went wrong.
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And the problem was probably the English language.
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Whoever did the calculations said that the grooves should be so far apart, let's say four inches for the first note, and they meant that there should be a groove every four inches.
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But whoever gave the instructions to the work crew said that the grooves should be four inches apart,
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and that was interpreted as four inches between the end of one groove and the start of the next one.
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itself.
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But your ears definitely do include it.
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The highest note on that section of the William Tell Overture should be one octave higher than the lowest.
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That means the frequency should be doubled and the grooves should be half the distance apart.
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And they are if you don't include the width of the groove itself.
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That error means that every note is distorted not by a fraction of its value, like if you're travelling at the wrong speed, but by a constant amount, by the width of the grooves.
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The higher the note, the greater the effect of that distortion.
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And the result is the mess that you are about to hear for a second time.
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And the really strange part?
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This is the second musical road built in Lancaster, California.
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The first one, built by the car company, was too close to residents who complained about the constant noise, and probably this note here.
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So the city paved over it and rebuilt it to the exact same wrong blueprints.
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That's a take.
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That is a take right there.
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And in order to celebrate that take, I'm going to put my foot down.
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This is an SUV.
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It doesn't do that.
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Vocabulary and speaking notes for this lesson
This B2 speaking lesson is built on the video “Why California's musical road sounds terrible”. The speaker keeps coming back to these words: groove, note, road, inches, sound. This video has 39 sentences and 550 words to shadow. The speech runs for 3:28. The speaker talks at a natural 159 words per minute, close to everyday conversation. 83% of the words are among the 3,000 most common in English; the rest is worth studying before you start.
Key vocabulary in this video
The 15 most advanced words in the video, with pronunciation and meaning:
| Word | Pronunciation | Meaning |
|---|---|---|
| groove noun | /ɡɹuv/ | A long, narrow channel or depression; e.g., such a slot cut into a hard material to provide a location for an engineering component, a tire groove, or a… |
| vibration noun | /vaɪˈbɹeɪʃən/ | The act of vibrating or the condition of being vibrated. |
| violin noun | /ˌvaɪ.əˈlɪn/ | A small unfretted stringed instrument with four strings tuned (lowest to highest) G-D-A-E, usually held against the chin and played with a bow. |
| calculation noun | /ˌkælkjuˈleɪʃn̩/ | The act or process of calculating. |
| width noun | /ˈwɪtθ/ | The state of being wide. |
| blueprint noun | /ˈbluːˌpɹɪnt/ | A type of paper-based reproduction process producing white-on-blue images by means of a photosensitive ferric compound, used primarily for technical and… |
| distort verb | /dɪsˈtɔːt/ | To bring something out of shape, to misshape. |
| indebted adjective | /ɪnˈdɛtɪd/ | Obligated, especially financially. |
| octave noun | /ˈɑktɪv/ | An interval of twelve semitones spanning eight degrees of the diatonic scale, representing a doubling or halving in pitch frequency. |
| synthesize verb | /ˈsɪnθəsaɪz/ | To combine two or more things to produce a new product. |
| tyre noun | /taɪə(ɹ)/ | The ring-shaped protective covering around a wheel which is usually made of rubber or plastic composite and is either pneumatic or solid. |
| distortion noun | /dɪsˈtɔːʃən/ | An act of distorting. |
| interpret verb | /ɪnˈtɜː.pɹɪt/ | To decode the meaning of a topic and then act, whether to continue researching the topic, follow through, act in opposition, or further the understanding… |
| stunt noun | /stʌnt/ | A daring or dangerous feat, often involving the display of gymnastic skills. |
| rebuild verb | /ɹiːˈbɪld/ | To build again or anew. |
Phrasal verbs you will hear
| Word | Pronunciation | Meaning |
|---|---|---|
| drive down verb | To cause or force a price, quantity, rate, etc. to decrease. | |
| figure out verb | To come to understand; to discover or find a solution; to deduce. | |
| show off verb | To exhibit the best attributes of something. | |
| slow down verb | To decelerate. | |
| speed up verb | /spiːdˈʌp/ | To accelerate; to increase speed. |
Pronunciation to watch
The speaker uses 11 contractions and reduced forms, such as it'll, I'm, doesn't. Say them the short way, as you hear them.
- The “th” sounds: width /ˈwɪtθ/, synthesize /ˈsɪnθəsaɪz/
- The “sh” and “zh” sounds: vibration /vaɪˈbɹeɪʃən/, calculation /ˌkælkjuˈleɪʃn̩/, distortion /dɪsˈtɔːʃən/, fraction /ˈfɹæk.ʃən/, instruction /ɪnˈstɹʌkʃən/
How to practise with this video
- Listen to the whole video once without speaking and note the words you do not know.
- Start at 0.75× speed, shadow it sentence by sentence, then go back to normal speed once it feels easy.
- Record yourself and compare with the original, paying attention to words like groove, vibration, violin.
What is the Shadowing Technique?
Shadowing is a science-backed language learning technique originally developed for professional interpreter training and popularized by polyglot Dr. Alexander Arguelles. The method is simple but powerful: you listen to native English audio and immediately repeat it out loud — like a shadow following the speaker with just a 1–2 second delay. Unlike passive listening or grammar drills, shadowing forces your brain and mouth muscles to simultaneously process and reproduce real speech patterns. Research shows it significantly improves pronunciation accuracy, intonation, rhythm, connected speech, listening comprehension, and speaking fluency — making it one of the most effective methods for IELTS Speaking preparation and real-world English communication.