If playing by yourself just alternate playing part then then then 
If playing with someone else, one person plays part through 1x, then
play both parts at the same time repeating each of your own parts.
Have fun with it (play part and octave lower the first time, then an
octave higher the second time around, etc, etc.). 

PART (you can also play each note of the chords individually 1x
instead of playing the whole chord 3x on each line; if you do this,
add a -3'' before the +4 +5 in line 2) 
+4   (+4+5+6) (+4+5+6) (+4+5+6) 
-3'' (+4+5)   (+4+5)   (+4+5) 
-4   (-4-5-6) (-4-5-6) (-4-5-6) 
-2   (-2-3-4) (-2-3-4) (-2-3-4) 

PART 
+7  +7 +7 
+7  -7 -6 -7 +7 -8 
+8  +8 +8 
+8  -8 +7 -8 +8 -9  
+9  +7 
-10 +9 -9 +8 -8 +7 
-6 
-7 -6 -7 -6 -7