ocr: - - - AUSI - - - - - - a - - FHEOR à - Tonality Play Now that you're comfortable with the process of going up and down a - . musical scale you'r re ready for the first big curve. 90f19 Not all the scale steps are the same interval apart! The way the piano keyboard works is that every key, white and black, is exactly the same interval away from its neighbor. This interval is known as a half-step. Summary The half-step is the smallest pitch interval used in Western music. Click on the keyboard and play up and down all the consecutive Half-steps white and black keys. You will Scale steps hear tha ...