Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Melissa Benoist and Grant Gustin HAVE to do a musical crossover episode! #glee origins #arrowverse
This tweet contains emotions: 
anticipation, joy, optimism