Mystery bird song

["G" gwapuffin]

http://soundcloud.com/gwapuffin/wc-den

Looking for input on the song from a bird that was recorded in Iowa during =
the month of June 2013.  To my ear the rhythm is that of an Eastern Towhee =
but the sonogram doesn't match most of the sonograms for EATO.  There was a=
 Wood Thrush singing a classic song from a distance before this bird sang a=
nd I thought the sound of this call had the voice quality of the Wood Thrus=
h as apposed to the Eastern Towhee.

Gerald White