His fourth album King was released in 2014 and reached #1 in Germany, Austria, and Switzerland. Kollegah has also released two collaborative albums with Farid Bang and the second one reached #1 in all three countries as well. Kollegah has been known for his feud with record label Aggro Berlin. He released his fifth album, “Zuhältertape Vol. 4”, in 2015. That album quickly ranked #1 in Germany. His sixth album, “Imperator”, was released in 2016 and hit #1 in Germany, Austria and Switzerland. In 2017 he released the third collaborative album with Farid Bang, which reached Gold status eight days before the official release, ranking #1 in Germany, Austria and Switzerland again and setting several records, with having 8 songs in the top 20 Single-Charts, 14 song in the top 30 and 17 songs in the top 50.