Both a music type and a way to play music. The Ult play music both of their own society and others on special instruments tuned to create sound under water. The music is without percussion and without rhythm and can be described as bell or organ music drawn out to wave like tone modulations. Several tone waves combined create the typical whining sound (The closest sound of Terran instruments is perhaps the Steel guitar ) Ult love to convert other music to their instruments..the results are …interesting.