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: .@WotzupCapeTown - thanks for sharing! Surprise guests! @HumanJurgen &amp; visiting US Tenor Sax @CunninghamColin. #livemusic #capetown #blues
This tweet contains emotions: 
joy, love, optimism, surprise