iFest announces music lineup for 2009 event in downtown Houston spotlighting Ireland. Headliners include Ohio Players, Los Lobos, Mavis Staples, Hugh Masekela, Seun Kuti & Egypt 80, Cherish the Ladies, Plena Libre, Marc Broussard, Marcia Ball, Flaco Jimenez, Rootz Underground, The Wailing Souls, Alpha YaYa Diallo, Joe Y La Familia, CJ Chenier, MORE
