Pakistan, Sept. 4 -- Beyonce is celebrating her 45th birthday with fresh music from her hit album B'Day. The singer released a special 20th anniversary edition of the record on September 4. The expanded version includes four previously unreleased tracks and new collaborations.

The anniversary edition features 31 songs in total. It combines the original 2006 album with new tracks including Creole, Back Up and Lost Yo Mind. Can I Watch You also appears on the release with Pharrell Williams.

Beyonce also teamed up with Maluma and the late Selena Quintanilla for the special project. She first began teasing the anniversary release in July. The singer used Morning Dew (Donk) to launch a 60-day countdown toward the new edition.

The project al...