You may think you can “just watch” the TEJANO CONJUNTO FESTIVAL from the pavilion at Rosedale Park, but once the music starts up and the audience members begin to pair off and rotate on the floor like a giant whirlpool, you’ll probably feel compelled to do likewise. This year, from May 6 through 8, performers such as Mingo Saldivar, Flaco Jimenez, Eva Ybarra, Los Fantasmas del Valle, and Los Dos Gilbertos will be the impetus for the revolutions. In other words, bring comfortable shoes.