Second (music)
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- For other uses, see Second
In music, a second may refer to:
- Minor second, or semitone
- Neutral second, or three-quarters-tone (i.e., one-and-a-half semitones)
- Major second, or whole tone (i.e, two semitones)
- Augmented second, or either one-and-one-quarter tones (i.e., two-and-a-half semitones) or one-and-one-half tones (i.e., three semitones)