half step

US /ˈhæf ˌstep/
UK /ˈhæf ˌstep/
"half step" picture
1.

半音

a musical interval of a semitone

:
The melody uses a lot of half steps, creating a dissonant sound.
這段旋律使用了許多半音,創造出不和諧的聲音。
To play a minor chord, you often lower the third note by a half step.
要彈奏小和弦,你通常會將第三個音符降低一個半音