Your Song is a song sung by Elton John in "I'm with Cupid". It is derived from one of his songs, Your Song, albeit modified slightly to take into account Apu and Manjula.
Lyrics
If I was a sculptor, but then again, no
Or a man who makes potions in a travelling show
I know it's not much but it's the best I can do
My gift is my song yeah... and this one's from Apu