"All creative differences — we have immense respect for each other," shared the frontman
A majority of 'A.F. Day' was written and recorded during System Of A Down's "early days"
Also featuring on the album are Rufus Wainwright, System Of A Down's Serj Tankian and many others
All proceeds from the single will go towards Armenia Fund's Artsakh Refugee Initiative
The publisher promises Tankian's memoir will be “far more than just a rock ‘n’ roll fable”
He also “sent them a kind letter urging them to reconsider playing their show in Azerbaijan” but received no response
“Serj hasn’t really wanted to be in the band for a long time"
The show sees Efron travelling the world in search of new and innovative ways to live greener
He said fans will hear from the band "next year"
"Wake up!"