YOU SAID:
Sing us a song, you're the piano man, sing us a song tonight, we're all in the mood for a melody and you've got us feeling alright.
INTO JAPANESE
歌ってくれよ、ピアノマン、今夜私たちは歌を歌う、私達はメロディーの気分で、いい感じを持っています。
That didn't even make that much sense in English.