Why do early country music recordings provide us with indirect evidence about the sound of folk and country music of the previous century?

-as popular music evolved musical elements of genres blended. When people form british islands immegrated to north america they brought along folk music. the british ballad from 1936 was recorded by barbara allen contained simularites of the little scot song that was documented bya bittish official in 1665the sond has been recorded in many different versions. it was written using pentaomin sale which ied folk thorugh reocrdings that can be compared to and are simular to Old Joe CLarlk, the first o fearly country music -old joe clark has compenes of papular dance brought from the british isles such as lyrics, fiddle parts, and instrumental parts that are snap shots of barbara allends -even though recordings of original folk music could never be hear, man mnew music recoridsn reviels featurs of early british folk