One of four members of the Swedish hip hop group Hov1 who is also a songwriter for the group.
He previously dated Zara Larsson. Her song "Never Forget You" is about him.
A border control guard forced him to prove he was heading to the United States on business as a singer by making Ludwig sing for him right there and then.
He was a high school sweetheart of Zara Larsson, but they ended their relationship with Zara moved to the United States in October 2014.
One of his Hov1 band mates is Noel Flike.