The band posted pictures of their rehearsal onto Snapchat, showing Mike on keyboard and Chester on guitar.
Mike posted a picture of him playing a new song on Instagram, with the caption: "Playing and singing a new one. This one is kinda challenging; I didn't play and sing the parts at the same time in the studio. Have to practice it over and over until muscle memory takes over."
Chester replied to a tweet Linkin Park posted, stating that rather than Battle Symphony, he was playing Sharp Edges in the photo.
