Charice had a mini live concert last December 19th at the Tokyo City View of Roppongi Hills as part of Japanese radio station J-Wave’s winter campaign. According to her Warner Music Japan website, she will be featured again on J-Wave’s “Curious” program on December 30th, from 11:30-14:00 Japan time.
Here are snippets of the concert which was featured on Japanese TV. Thank you to flipninjashadow for the raw video and to miyi for the subtitles and encoding.
Uploaded by tmgtwJapan

Charice Japan Concert Tour 2011
February 21 (Monday) at Zepp Nagoya
Gate opens: 18:00 Concert starts: 19:00
February 22 (Tuesday) and 23 Wednesday) at Zepp Tokyo
Gate opens: 18:00 Concert starts: 19:00
February 25 (Friday) at Zepp Osaka
Gate opens: 18:00 Concert starts: 19:00
Source: Charice