Music is a main feature of the program ; the show is a significant outlet for American folk music of many genres , especially country , bluegrass , blues , and gospel , but it also has guest performers from a wide variety of other styles of music , including classical , opera , and music from a number of different countries .
It includes many different kinds of music , including country , bluegrass , blues , and gospel . The program also has guest performers from a wide variety of other styles of music , including classical , opera and music from a number of different countries .