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: As the birds chirp and the cows moo we need to listen to the sound of nature to ensure that all is well.
This tweet contains emotions: 
joy, optimism