Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: @715d1\nI bought the Steam port of Vice City, and to my delight Billie Jean is on the soundtrack!
This tweet contains emotions: 
joy