Louisiana-born blues guitarist Tab Benoit started up “Voice of the Wetlands," a charity focusing on coastal preservation, back in 2003. Thing is, that moniker is also apropos for Benoit. With the grit of the delta blues in his guitar work and the thick atmosphere of his vocals, Benoit’s commitment to the South’s fine legacy of all things Cajun is quite strong. Pick up a copy of 1992’s Nice and Warm or 2011’s Medicine for perspectives on his early and late career points, respectively. The talented singer-guitarist comes to the Kent Stage tonight at 7. Tickets cost $35 to $45.