The album was produced by Ralf Christian Mayer and coproduced by Sebastian Böhnisch and recorded in Germany, France and Spain.

In November 2013, he was featured in the rapper Sido's hit "Einer dieser Steine", singing in the refrain.

An even bigger hit for Forster was "Au revoir", this time with roles reversed—Forster listed as primary artist and featuring Sido—with this single being a prelude to the very successful album Bauch und Kopf in 2013.

The album was certified gold and included the now-smash-hit "Au revoir" and two other follow-up hit singles, "Flash mich" and the title track "Bauch und Kopf", the latter of which won Bundesvision Song Contest 2015.

In 2024, it was announced that Forster would be rejoining The Voice of Germany, alongside Samu Haber, Yvonne Catterfield and new coach Kamrad.