ragtime -
A musical form having a rhythm characterized by strong syncopation in the melody with a regularly accented accompaniment.
ragtime -
A piece of music in this style.
Wikipedia
Ragtime (alternately spelled rag-time) is an original musical genre which enjoyed its peak popularity between 1897 and 1918. Its main characteristic trait is its syncopated, or "ragged," rhythm. It began as dance music in the red-light districts of American cities such as St.