Porter Robinson - Sad machine

This the Intro and Main Riff for Sad Machine. There is another intro tab for it but this is how I play it on piano! Please enjoy! e|-------------18-15-18-15-----| B|16--16--16----------------18-| G|-----------------------------| X3 D|-----------------------------| A|-----------------------------| E|-----------------------------| e|------------18--20--15--15------| B|16--16--16------------------18--| G|--------------------------------| X1 D|--------------------------------| A|--------------------------------| E|--------------------------------|