Good, good.
I think the song certainly was pretty good, but i simply dislike the sound of synthetic violins. But that's just me, I play an actual violin all the time, and now the sound of synthetic violins just sound wrong to me all the time. Like, it doesn't sound right, like a violin should sound like, you know?
If you could get the user PessimistOwl (who commented earlier and proposed doing so) to play it and have it recorded for you to put as part of the song (replacing the synthetic violins), I think that would be great to hear.
But, yes, I certainly do agree that playing by ear is difficult... but not impossible.
I would offer to do it myself(it doesn't sound very hard), but my recording equipment sucks, so it probably wouldn't improve it at all. -.-