Pitch refers to how high or low a sound is. Having the right pitch pattern in a word makes it sound natural; sometimes, changing the pitch pattern can even make a difference in the meaning of a word!
The pitch of individual words is mostly unpredictable, so learners of Japanese need to memorize pitch patterns of words every time they encounter new words. However, there are some regularities in pitch patterns that contribute to the beauty of Japanese intonation. Watch the video below to learn more.