Basic chords for Piano. Sounds right to me and it is a fun song to make your own changes 
and variations. Song reminds me of scattering a friend's ashes on a mountain not far 
outside Las Vegas.

Bb                                        Bb/A
Dust devil swept you away. Still not real.

Gm7
Ash, urn, and silence.

Gm7         Em
Talk to me.



Bb
Dust devil swept you away.
Bb                Bb/A             Gm7
My recollections are all that's left of you.

Gm7                    F#
Swirl and sway without me


Bb                      Bb/A
Dust devil swept you away.
Gm7                            Em
Whirling playful dancing about you.
Bb                  Bb/A
What?s left of you is
Gm7                 F#
Ash and urn and this silent horizon.