Verified answer

I can only give your names of rapper as hyperlink,then you'll google it.....canibus,twista,wu-tang.

My favorite underground hip-hop songs are (not in any order)

Don't Cry by Jedi Mind Tricks

Suicide Girl by Army Of The Pharoahs

Reasons by Diabolic

Razorblade Salvation by Jedi Mind Tricks (this song is amazing)

And I don't know if you'd consider him underground but have you heard Caught In A Hustle by Immortal Technique?

Heavenly divine

Muerte

Retaliation

Put em in the grave

Outlive of war

I against i

All by Jedi Mind Tricks

Lowkey ft Logic - Relatives

Lowkey - Obama Nation

Lowkey - Terrorist

Immortal Technique - Dance With The Devil

Copywrite - Size 12's

N Dubz - Missing You

"Truth Pt.2" by Diabolic

My favorite underground rapper.