For this chain-of-thought reasoning and answer, what was the question?
The relevant sentence in the passage is: The genre reached national exposure when it was represented by vocal groups such as the Beach Boys and Jan and Dean.
A: vocal groups such as the Beach Boys and Jan and Dean
Q: The genre reached national exposure when it was represented by vocal groups such as the Beach Boys and Jan and Dean. Dale is quoted on such groups: "They were surfing sounds (with) surfing lyrics. In other words, the music was n't surfing music. The words made them surfing songs ... That was the difference ... the real surfing music is instrumental."

Based on this passage, who brought surf music to a national audience?