American singer Christina Aguilera has performed on six concert tours, one promotional tour and two concert residencies. Additionally, she has performed at 15 music festivals, and seven benefit concerts. Her touring career began with Christina Aguilera in Concert. It was originally held in North America in 2000, promoting her debut album, Christina Aguilera (1999). Following the release of Mi Reflejo in September 2000, the tour was extended into 2001, with shows in Latin America and Asia. The tour was received favorably by critics, commenting on Aguilera's showmanship, and specifically applauding her vocals, which received comparisons to Mariah Carey and Whitney Houston.