Korean has several compound vowels made by blending two basic vowels together. In this lesson, you'll learn four of them: ㅐ, ㅔ, ㅒ, and ㅖ. These are all made by combining a vowel with ㅣ (i). You might notice that ㅐ and ㅔ look very similar and sound almost the same -- that's not your imagination! It's a real feature of modern Korean pronunciation.