YOU SAID:

I have on more than one occasion been subjected to hearing my father sing while drunk.

INTO JAPANESE

私は何度も酔っている間に父が歌うのを聞いたことがあります。

BACK INTO ENGLISH

I have heard that my father sings while being drunk many times.

INTO JAPANESE

父は何度も酔って歌っていると聞いたことがあります。

BACK INTO ENGLISH

I have heard that my father has drunk many times and sings.

INTO JAPANESE

私の父は何度も酔って歌っていると聞きました。

BACK INTO ENGLISH

I heard that my father is drunk many times and sings.

INTO JAPANESE

私は父が何度も酔って歌っていると聞いた。

BACK INTO ENGLISH

I heard that my father was drunk many times singing.

INTO JAPANESE

父は何度も歌って酔っていたそうです。

BACK INTO ENGLISH

My father sang many times and was drunk.

INTO JAPANESE

私の父は何度も歌って酔っていました。

BACK INTO ENGLISH

My father was drunk many times singing.

INTO JAPANESE

私の父は何度も歌って酔っていました。

BACK INTO ENGLISH

My father was drunk many times singing.