A musical phrase is a group of notes that are played together to form a melody. The two crossword solutions for the term musical phrase are RIFF (4 letters) and TRALA (5 letters). A riff is a short, repeated musical phrase that is often used as an introduction or interlude in a song. It is usually played on a guitar or keyboard. A trala is a type of musical phrase that is used to add emphasis to a melody. It is usually played on a stringed instrument such as a violin or cello.