The person known for going out into the country in search of traditional musicians is D. Cecil Sharp.
Here's why:
1. Cecil Sharp was a prominent English folk song collector and musicologist known for his extensive work in documenting traditional music in rural England.
2. He traveled throughout the English countryside during the late 19th and early 20th centuries to collect and preserve folk songs, dances, and tunes that were in danger of being lost.
3. Sharp's efforts led to the preservation of a significant portion of England's folk music heritage and contributed to the revival of interest in traditional music.
In summary, Cecil Sharp is the individual among the four listed who was known for seeking out traditional musicians in the countryside.
