Why is there no black note between B and C or between E and F? Well, this is a simple sounding question with a not very simple answer. You'll need to be sitting up in your seat for this one! My video on Microtonality: https://www.youtube.com/watch?v=q1XOnIk2ai8 My video on 12-tone Equal Temperament: https://www.youtube.com/watch?v=7JhVcGtT8z4 📌This video is a revised re-upload. I originally uploaded this video in April 2022, but soon realised from the reaction in the comments that I had skimmed over a lot of detail when it came to the major scale and the tones and semitones. This was causing confusion for many viewers so I've now decided to replace that video with this new, updated version. I'm much happier with the explaination in this video. Sorry again for any confusion caused by the original edition. You can still view the original version if you like here: https://www.youtube.com/watch?v=r7aQQQsvxho And, an extra special thanks goes to Peter Keller, Douglas Lind, Vidad Flowers, Ivan Pang, Waylon Fairbanks, Jon Dye, Austin Russell, Christopher Ryan, Toot & Paul Peijzel, the channel’s Patreon saints! 😇 SUPPORT ME ON PATREON: https://www.patreon.com/davidbennettpiano 🎹 SOURCES: Early Music Sources - Musica Ficta: https://www.youtube.com/watch?v=6VF6YkCNRyE Early Music Sources - Gregorian Chant: https://www.youtube.com/watch?v=QuRrd35kvUo Early Music Sources - Solmization: https://www.youtube.com/watch?v=IRDDT1uSrd0 Early Music Sources - Modes: https://www.youtube.com/watch?v=lyq48eybjZw Adam Neely & the tritone: https://www.youtube.com/watch?v=3MhwGnq4N9o Adam Neely & the tritone (again!): https://www.youtube.com/watch?v=eR5yzCH5CsM The Hydraulis: https://www.youtube.com/watch?v=zZey_H8qmQA 12Tone - Why do notes have names?: https://www.youtube.com/watch?v=BBbhfRfQIMM The oldest playable organ in the world: https://www.youtube.com/watch?v=jxwZTfILJDA The Halberstadt organ: https://second.wiki/wiki/orgel_des_domes_zu_halberstadt History of the organ: https://www.britannica.com/art/keyboard-instrument/History-of-the-organ-to-1800 Cantus Firmus: http://www.estherlederberg.com/EImages/Extracurricular/Renaissance+Baroque/Music/cantus.html Plainchant: https://www.britannica.com/art/mode-music/Plainchant Accidentals: https://www.britannica.com/art/accidental History of Harmony: https://www.britannica.com/art/harmony-music The Hexachord: https://hasseproject.com/articles/hexachord-the/ 0:00 Introduction 1:20 the Major scale 2:58 Microtonal notes 3:56 the history of music theory 12:23 Temperament 13:29 B# and E# exist in notation