In reply to Arie.

no they didnt and i have been at beyonce concerts and she does sing live honey cause during the performance she stopped to hug a fan and it didnt look performed so shut up,its really disgusting,bey does sing live look at her before fame videos,she sang better than rihanna now.

i dont know bout the nationAL antheme but i swear on my life beyonce sings live when she in my hometown,ive seen the way she just stop singing to greet fans and the way she gets tired and breathes into the mic,too real to fake.