half step (noun)

1. The fashion designer used a half step in her music-inspired collection to represent the harmony between music and fashion.

2. Why did the piano tuner refuse to play a half step? Because he couldn't find the key to a good punchline!

3. As the eerie melody played, the protagonist felt a chill run down his spine, its dissonant half step adding to the suspense of the horror movie.

4. In the animated series, the mischievous mouse played a half step on the piano, causing chaos in the symphony orchestra of talking animals.