Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @indiamarshall_ that's great! It's not easy!\n&amp; it's amazing when nervousness turns into adrenaline 😂\nHad you had concerts as soloist before?
This tweet contains emotions: 
joy