Tony Castañeda is a Madison-based percussionist, a radio host, an advocate for social justice who’s worked in youth counseling and housing issues, and just generally a guy with a big personality and a decades-long history here in Madison. His Tony Castañeda Latin Jazz Band, which plays frequently around town, got started more than 20 years ago as Castañeda was winding down his earlier band, Olmeca, which blended elements of Chicano music, psychedelic rock, and jazz fusion.