Arduino + Music Instrument Sheild + Accelerometer + wireless communication

Hello everyone,

Using an accelerometer to connected to musical instrument sheild to produce midi sounds. My project runs as expected when I connect the accelerometer and musical instrument sheild to the same arduino (Wired communication) I'd like to switch to wireless now. Could you please suggest which wireless module would be feasable for this kind of project? I've been experimenting with xbee pro s1 lately and performance is not that great. I have connected one arduino to the accelerometer and xbee and on the recieving end I have a midi shield , xbee and arduino connected to a speaker. I am using arduino Uno Edit : I am using XBEE without an antena