NEW YORK  - Ke$ha is the latest western musical act to cancel or postpone her upcoming tour of Japan citing the devastating earthquake and tsunami.

The pop singer released a statement explaining the postponement through her Japanese promoter, Creativeman Productions, saying:

"My heart is with Japan right now through this disaster and these hardships. I genuinely don't think right now would be appropriate timing for me to perform in Japan given the content and the spirit of my show, which is all about feeling exuberant, rowdy, and wild.

"I plan to bring my party there and to that part of the world when we are all ready to dance and Get $leazy together again," she continued. "In the meantime I am going to do everything I can to help relief efforts and I encourage everyone in the world to do the same."

The singer kicks off a new U.S. string of shows on April 1 in Clarion, Pa.

Creativeman also announced it would cancel Springgroove, its annual spring R&B, soul and hip-hop festival scheduled for Makuhari Messe near Tokyo on April 2 and Zepp Osaka on April 3. Nelly and Flo Rida, among others, were set to headline.

Creativeman's annual hardcore festival, Punkspring, also has been canceled. Good Charlotte and Hoobastank were to headline the festival planned for alternating line-ups at Zepp Osaka and Zepp Nagoya on April 1 and 2 and Makuhari Messe on April 3.