Soul music has its roots in traditional African-American gospel music and rhythm and blues and as the hybridization of their respective religious and secular styles – in both lyrical content and instrumentation – that began in the 1950s. The term "soul" had been used among African-American musicians to emphasize the feeling of being an African-American in the United States. According to musicologist Barry Hansen,Though this hybrid produced a clutch of hits in the R&B market in the early 1950s, only the most adventurous white fans felt its impact at the time; the rest had to wait for the coming of soul music in the 1960s to feel the rush of rock and roll sung gospel-style.