Mellotronists

does anyone know which sound is used on the michael andrews soundtrack for the film "me, 
you, and everyone we know"...?  it's the first sound used on the song.  i'm almost positive this 
is a mellotron and i've heard the sound used on (i think) a medeski, martin and wood album 
too...maybe combustication?  if anyone has any idea what sound this is i would love to 
know...even if someone has a sample or something that they could post...thanks