Last year, I went to Beyoncé awesome show (concert) in the Castelão Stadium. She sang (or still better "performed") for almost four hours straight (four hours in a row).
Awesome on her part, she sang a lot of hits, of wich the greatest ones (or, the most famous of them) were Love on Top and Crazy in Love. Some of the songs had a good beat, the kind of gets you wanting to dance on the spot! The show was fabulous. In general, it was a blast, amazing indeed, the only downside was the poor planning/lack of organization by the staff.
Now, if you want to mean it was real messy then you can go like:
Altough the artist´s show was amazing, the place/venue was a zoo, it wasn´t worth the pricey ticket we bought, only to get ourselves packed in like sardines. The sound was awful, one couldn´t make out what she sing-sang. Many had to watch the show through the mounted TV screens, etc etc...