Jazzy REFRAIN is a musical term used to describe a repeating phrase or melody that is often used in jazz music. The term can also be broken down into two parts, 'JAZZY' and 'REFRAIN'. A 'JAZZY' phrase is one that is characterized by improvisation and syncopation, while a 'REFRAIN' is a repeated phrase or melody. The crossword solution for this term is RIFF, which is a short musical phrase that is often repeated throughout a song.