I performed a solo at a local Solo Ensemble Festival, and like all of my performances or auditions... I failed. I don't feel nervous, but always in the middle of my piece, scale, or what ever I'm playing, my mind goes blank, and I lose control of everything. I practice about 3 hours everyday (splitting it up through out the day) and I am always more than prepared. However, I always end up doing horrible. How should I fix this problem? This only happens when I perform by myself.