눈 감으면 네가 보여

The line, explained

Some lines paint a picture before you understand a word. 눈 감으면 네가 보여 — 'when I close my eyes, I see you'. It is four words long, and the hinge is the ending -(으)면, which means both 'if' and 'when'. Once you can hear that ending, you can follow the shape of half the ballads ever written: when this happens, then that happens.

눈 means 'eye', and also 'snow' — same spelling, same sound, and Korean speakers simply know which one from context. Here the verb makes it obvious. 감다 is a special verb used only for closing your eyes; you do not 감다 a door or a book. So 눈 감다 is 'to close one's eyes', and lyrics drop the object particle (눈을) to keep the line light.

감으면 is that verb with -(으)면 attached. The rule is about sound: if the stem ends in a vowel, add -면 (가다 → 가면); if it ends in a consonant, slip in 으 first so the ending can be pronounced (감다 → 감으면). The ending means 'if' or 'when', and Korean does not distinguish them. 눈 감으면 can be 'if I close my eyes' or 'when I close my eyes'; in a love song it is clearly 'when', because it always happens.

네가 is 'you' as the subject: 너 plus 가 fuses into 네가. Here is a famous trap. 네가 (you) and 내가 (I) sound almost identical, so in speech and in songs people say 니가 for 'you' to keep them apart. You will see 네가 written and hear 니가 sung. 보여 is 보이다, 'to be visible', in casual present. It is not 'I see you' but 'you appear' — the image arrives on its own.

That passive verb is what makes the line ache. The singer is not trying to picture anyone; they close their eyes and there you are. The -면 clause sets the condition, the second half gives the result, and the order never changes. Swap the result and you get a whole album: 눈 감으면 네가 있어 (when I close my eyes, you are there), 눈 감으면 네가 웃어 (you smile), 눈 감으면 네가 떠올라 (you come to mind).