Grimes - Genesis chords

The chords throughout the entire song are: 
F# Bbm C# F#

Keyboard at beginning just goes up the black keys, listen to rhythm (these are not 
chords, they are notes):
F#  G# Bb C# D# F# G# Bb C# D# F# G# Bb G# F# G# Bb G# F# G# Bb G# F# (and then back down again)

[ Tab from: http://www.guitaretab.com/g/grimes/327999.html ]
    F#              Bbm
My heart will never feel 
            C#
Will never see 
            F#
Will never know 


     F#
Oh, heart 
            Bbm
And then it falls 
            C#
And then I fall
            F#
And then I know 


     F#             Bbm
My heart will never feel 
            C#
Will never see 
            F#
Will never know 


F#   Bbm
     Holding on, I
 C#   F#
      am a vagabond 
F#     Bbm
   Its always different
C#  F#
    I am the one who falls