Task: Assess the emotional content of the tweet and classify it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's mental state.
Tweet: Watching the NY Phil webcast.  Something missing.  Reminds me of a blithe Journey's End I once saw on Bway.  Might just be the Gershwin.
This tweet contains emotions: 
anticipation, optimism