I always have a very hard time "hearing" song in human text 
transliterations, but there's a White-Crowned Sparrow singing 
away right outside my window as I sit at the computer, and the 
general form of its song would seem to fit, particularly that 
insitial firm "sure" note followed by a quicker, slightly more 
vague pattern.  Have you tried listening to examples of that? 
They actually do vary quite a bit, so examples you find on the 
Web may not match note for note what you've heard, so listen more 
for the tonal quality and the general shape of the song.

Jane
Shoreham

Gregory Askew wrote:
> Here at Northlands Job Corps in Vergennes there are two birds singing a song
> I can't quite place. We have a pretty open campus with scattered trees. The
> birds in question must be a passerine and one was singing fairly high in a
> maple.
> The song went like this...
> Sure te-o te-o too too sure
> The first note was the longest, the second and third were quicker and
> identical, and the last three had a buzzy quality.
> Any thoughts?
> 
> Greg
> Vergennes
> 
>