<P> By April 2013, the band had 13 songs in development, with Kisser commenting positively about the progress of the album, saying: "This is the first time writing with Eloy Casagrande on drums and everything sounds fresh (...) You'll just have to wait to hear it . It's very difficult to describe what we're doing, but I can say that will be one of the strongest Sepultura albums to date ." In May, vocalist Derrick Green reported "We have written most of the music already and now we are working on lyrics for the album . We should have everything ready before we hit the studio June 1st ." </P> <P> On June 10, during the recording of the album, the band announced that they had six songs recorded for the album, and according to Kisser, they were "going in a rate of two songs a day". Later that month, it was announced that former Slayer drummer Dave Lombardo would make a guest appearance on the album, with Kisser explaining "When the mics were all ready and running Eloy and Dave started playing and the magic was on, so great! The part they recorded will be a special part on the middle of one of the songs, it came out crazy!" </P> <P> On July 12, it was announced that the band has completed recording the album, and a week later, they announced that it would be called The Mediator Between Head and Hands Must Be the Heart . </P> <P> Vocalist Derrick Green described the album's sound as "really sinister, dark, and metal as hell!" whilst guitarist Andreas Kisser said that the album is "brutal, fast and straight to the point". They also commented positively on the input of new drummer Eloy Casagrande, with Green explaining "It's been great working with Eloy in the writing process because it brings a whole different energy to the music . The many changes that have been going on in our lives and in the world also add to the making of the new album ." </P>

The mediator between the head and the hands is the heart metropolis