One of the best places in the world to see left field, experimental and creative new music which sits outside the realm of the mainstream. It should be cherished.
I wish i went more often...Some highlights of mine include Midori Takada and Acid Mothers Temple.
A place that really grows on you, with each visit the Barbican reveals more of itself to you and your bond is tightened. The Barbican Kitchen is great for coffee or lunch, summer hangouts by the ponds, cinema in winter, the amazing Barbican Hall for live music, and don't miss the conservatory.