Great map!

My favorite is Carioca da Gema, a great small place for live music and watching the locals dance samba gafiera:
http://www.barcariocadagema.com.br/bar.htm

Scenarium is too touristy, big, and crowded for me.

This site is a good one for info on Lapa:
http://www.lanalapa.com.br/

I also like some samba clubs in Centro: Elite, Estudantina, Democraticos
http://www.riodejaneiroaqui.com/port...a-e-danca.html
(site in Portuguese, use Google translate)

Have fun.