The minute she emerged, the people went crazy, and started jumping and dancing.

She opened the main event with "Fingerprints."

The idea of performing for a charitable cause appealed to Dave Elkins, vocalist of American rock band M.A.E. (Multi-sensory Aesthetic Experience), so he agreed to rock for relief.

His first song was "Embers and Envelopes."

Here's the group's guitarist, Zach Gehring.

M.A.E. also performed "A Melody, The Memory" and "Summertime" from the Destination: Beautiful album, and "Just Let Go" from Singularity. 

The mood turned "naughty and nice" when Katy entered the stage.

Heart-shaped lights, pink flamingos, and her signature fruit-shaped accents added colorful zing to the concert.

Most of the pieces in her repertoire had the audience singing along with her. She rendered "Hot N Cold," "Waking Up In Vegas," "Ur So Gay," "Mannequin," and "One of The Boys."

Her songs are downright honest, playful, and empowering.

"Manila, make some noise..." And Pinoys gave her a roar!

The 25-year-old American songwriter-singer used most of the tracks in her One of the Boys album, which inluded "Use Your Love," "Self-Inflicted," and "If You Can Afford Me."

Before shifting from fast to slow, she warned the crowd that she was gonna pour out her heartbreak.

Katy dropped her naughty mode and turned melancholy with "Thinking Of You" and "I'm still Breathing."

She's been "on the road for two years." Manila was her "last stop," and she's glad that she "saved the best for last."

Thank you, Katy. You rock!