Complex sentence: Ragtime appeared as sheet music, popularized by African-American musicians such as the entertainer Ernest Hogan, whose hit songs appeared in 1895; two years later Vess Ossman recorded a medley of these songs as a banjo solo, "Rag Time Medley".
Split into simpler sentences: Ragtime appeared as sheet music, popularized by African-American musicians such as the entertainer Ernest Hogan, whose hit songs appeared in 1895. Two years later, Vess Ossman recorded a medley of these songs as a banjo solo known as "Rag Time Medley".