Cas van der Heijden, better known as Loesoe, is a record producer from the Netherlands. He initially garnered a lot of attention via the beats posted on his YouTube channel.

He is perhaps best known for producing Trippie Redd’s smash hit “Miss the Rage” featuring Playboi Carti, though he has also notably worked with Lil Uzi Vert, Trippie Redd, Future, and Bladee, among others.