Check the Agenda on
Notorius, Sanata Bar, Thelonious, jazz y pop. Etc
Sometimes there played good bands, I don`t remember many sites at this moment.
http://www.thelonious.com.ar/
http://www.sanatabar.com
http://www.notorious.com.ar
http://www.vammos.com.ar/salida/jazz-amp-pop/