The Dutch bandleader and composer arranged for Benny Goodman and Andre Kostelanetz in the ‘30s. He is perhaps best-known for having composed (with Arthur William Halifax) the popular tune "Penny Serenade," which was recorded by Guy Lombardo's band and Nat Gonella, among others. Weersma studied piano in his youth and played in Dutch and German bands from the mid ‘20s. He formed a group called the Red, White and Blue Aces in 1934. In 1935 he moved to London and arranged for Jack Hylton; later that year he moved to Chicago and worked with Goodman and Kostelanetz. He lived and worked in Argentina beginning in the late ‘30s, then moved back to the Netherlands after retiring from music.