A half step.
A. whole note
A. Half Step.
2nd
The smallest interval in traditional western (hemisphere) music is the half step
The term for the distance between two notes in music is called an interval.
The technique used by musicians to rapidly alternate between two adjacent notes, known as a "Bach trill," is called a tremolo.
Pitch length refers to the distance between two consecutive points of a repeating pattern, typically in contexts like music, textiles, or mechanical engineering. In music, it can describe the interval between notes or the distance between pitches in a scale. In textiles, it often refers to the spacing between threads in woven fabrics. In mechanical contexts, it may pertain to the distance between the centers of adjacent gears or the distance between threads on a screw.
8
5th
octave
A step is the distance between two notes. A half step is the shortest (tonal) distance between two notes (such as between B and C), and a whole step is therefore a distance of two half steps between two notes (such as between C and D, since C#/Db is between them).
A half step in music is the smallest interval between two notes. It is the distance of one key on a piano. A whole step is two half steps put together, or the distance of two keys on a piano.