In 1584 Verdonck returned to Spain, once again singing in the choir of Philip II, staying there until 1598 or 1599, after which he again returned to Antwerp. Also in 1599 he participated in the elaborate entry procession of the newly married Archduke Albert and Archduchess Isabella into Antwerp, writing a motet ("Prome, novas") for the occasion: it was performed by a six-member boys' choir mounted on the back of an elephant, which rode along with the Archduke and Archduchess (accounts differ as to whether it was a real or artificial animal). It is the only known motet composed for performance on an elephant.