The Supermarket Symphony
In a Co-op supermarket in Sheffield, England, something amazing happened. Shoppers discovered that a group of three freezers at the back of the store were all humming in perfect harmony! The sound they made was a beautiful, calm musical chord (C-sharp major). The story went viral online, and people loved it so much that some even asked for a 10-hour recording of the freezer sounds to listen to for relaxation. Learn more!
Wee Ones
The freezers make a rhythmic sound: Hum, Hum, Click. Hum, Hum, Click. If the pattern keeps going, what sound comes after the 'Click'?
Little Kids
The famous sound comes from a row of 3 humming freezers. If each freezer has 2 glass doors, how many doors are there in total? Let's count by 2s!
Big Kids
One person on the internet joked that they wanted a 10-hour recording of the freezer sounds to relax. How many minutes are there in 10 hours?
The Sky's the Limit
The musical note the freezers hum, C-sharp (C#), has a frequency of about 277 Hertz (cycles per second). A note that is one octave higher has double the frequency. What is the frequency of a C# note one octave higher?