<p> </p><p>More bad news for Rapper T.I. who is (most known) for his Grammy hit ” What You Know” , T.I.is being sued for copyright infringement by Nathan Filby, aka’ rapper Motoe Blizzid.</p><p>RadarOnline reports Filby is being represented by One LLP, an entertainment and intellectual property litigation firm known for handling high-profile copyright infringement suits- is taking issue with the rapper’s 2006 Grammy-award winning song “What You Know”. Filby says the song uses substantial portions of his 2004 track entitled “Reverence.”</p><p>He says the musical evidence is irrefutable from their “same rate of harmonic range” to their “virtually identical core harmonic progression of descending 4ths” and “nearly identical instrumental melodic lines in terms of pitch, shape, and rhythm.” Filby even added illustrations in the court documents showing the two songs’ similar melodic similarities.</p><p> </p>