Verbseoul.
하다 verb
개사하다gaesahadato change lyrics

To say to change lyrics politely in the present tense, use 개사해요 (gae-sah-hae-yoh). Below is the full conjugation of 개사하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
개사해
gae-sah-hae
개사해요
gae-sah-hae-yoh
개사합니다
gae-sah-hahm-nee-dah
Past
개사했어
gae-sah-hae-ssuh
개사했어요
gae-sah-hae-ssuh-yoh
개사했습니다
gae-sah-hae-sseum-nee-dah
Future
개사할 거야
gae-sah-hahl- -guh-yah
개사할 거예요
gae-sah-hahl- -guh-yae-yoh
개사할 겁니다
gae-sah-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
개사하세요
gae-sah-hah-sae-yoh
Suggestion / Let's Polite (요)
개사해요
gae-sah-hae-yoh
Question Polite (요)
개사해요?
gae-sah-hae-yoh-?
Connective “and” — (고)
개사하고
gae-sah-hah-goh
Conditional “if” — (면)
개사하면
gae-sah-hah-myuhn
Noun form — (기)
개사함
gae-sah-hahm