Follow Ullevi - in the clip you will see Laleh preparing for the show
When the tickets were released, 15,000 tickets were sold during the first hour.
With hits like "Some die young", "Goliath" and "It will be good", Laleh has become one of Sweden's most successful artists.
She has also reaped great success as a songwriter and producer.
On Friday, she celebrates her 40th birthday together with almost 30,000 people at Ullevi.
Few women on Ullevi's stage
Only a few women have been on Ullevi's stage as solo artists: P! Nk, Tina Turner and Madonna.
Now Laleh becomes the first Swedish female artist to be the main act in the iconic arena.
Previous Swedish artists to take over the arena are Håkan Hellström and Gyllene tider and Robert Wells with Rhapsody in Rock ensemble, including Jerry Williams.