Is there such a thing as "underground" country music?

Yeah - stuff that is so whiny and self-pitying that even rednecks won't listen to it.

for sure songs like She Thinks My Tractors horny - Kenny Chesney females Love usa Boys - hint Adkins Honky Tonk Badonkadonk - hint Adkins lengthy slow kisses - Jeff Bates Tequila Makes Her clothing Fall Off - Joe Nichols She's usa - Jason Aldean positioned a woman In It - Brooks & Dunn Chicks Dig It - Chris Cagle Redneck women people - Gretchen Wilson must be Doing some thing properly - Billy Currington relies upon on what you want horny to intend

I know there is underground metal, rave, rap, hip hop music.

Underground country?

Johnny Cash and Willie Nelson rarely come on the radio so I think they count even though they are legends.