49 Keyboard into Brain?

hernan

Hi! I disintegrated my keyboard midi controller to make a custom one using the Brain. I don't see any of the Livid Ins. controllers with a keyboard and would like to know if the Brain is able to pick up 49 on/off keyboard signals and perhaps velocity/aftertouch. Would I need an additional chip? I did come across a similar project but the Arduino was used with a so-called 74HC595 chip.  

here is the link http://www.codetinkerhack.com/2012/11/how-to-turn-piano-toy-into-midi.html

Thanks!