Branch Retinal Artery Occlusion - Pathophysiology. 1  Most commonly, a branch retinal artery occlusion occurs secondary to an embolus. Emboli typically originate within vessels upstream where they dislodge and travel within the circulatory system to ultimately become lodged downstream in a vessel with a smaller lumen.
Ragtime is a musical form or style that is defined as a syncopated melody (usually in 2/4 time) over a regular, march tempo bass line. Improvisation was common but little of that aspect has been preserved.
Latin American music, such as the Cuban habanera, also influenced its style. Until the end of WWI, ragtime was played by several different types of bands which include: dance bands, brass bands, country string bands, symphony, orchestras, and the classic ragtime style -solo pianists.