Somebody did this with "Let's Go Away", too, on a fan tribute album in the mid-nineties (same one that had the classic "Landy, He Needs Me".
Isn't the melody supposed to be more in the ballpark with "Had To Phone Ya"?
why?
In the world of Brian Wilson, taking a portion of a song and using i in a unrelated place is commonplace...
the Steinberg Melody fits great... why not use it.