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: When Duane Allman died, I learned to appreciate Stevie Ray Vaughan. True story.  #blues #legends
This tweet contains emotions: 
anticipation, optimism, trust