Birmingham production duo Hybrid Theory are here today with a druggy, bass-driven grime track in the name of "That's What It Is". A shuddering monster of a bassline provides a solid backdrop for fellow Brummies, MCs Trilla and Lady Leshurr, to champion the second city's cultural prowess. The brutally simple "wob" bass line creates enough power to grab your attention, but it's the two lyricists spitting over the top that keep you listening. Midlanders will notice plenty of references to the second city throughout the track, particularly its area code '0121', though mentions of UB40 and the Bull Ring are conspicuously absent. "That's What It Is" will be released through Four40 Records on November 20. Stream the track in full below.