Scat singing is a popular technique used in jazz music where the singer improvises using sounds and syllables instead of lyrics. If you are looking for synonyms for the term "scat singing," there are several different phrases you can use. Some popular options include "vocalese," "wordless vocals," "improvisational singing," and "syllable singing." Each phrase describes a slightly different aspect of this unique style of singing, but they all refer to the same basic idea of using non-lyrical sounds and syllables to create an improvised melody. Whether you are a jazz enthusiast or simply interested in this musical technique, these synonyms will help you explore the world of scat singing and its many variations.