Barnes & Thornburg joins a rapidly growing roster of other high-grossing law firms that have flocked to Nashville just within the last two years — most notably K&L Gates, which plucked attorneys from at least four of Nashville’s biggest firms and now counts almost 50 employees in Nashville. Principals at Waller Lansden Dortch & Davis remain in negotiations to join Holland & Knight LLP, ranked 30th on the AmLaw 200.