Fashion, music and art collided in Tokyo as MAC Cosmetics and the MAC AIDS Fund hosted the highly anticipated Pan-Asia Viva Glam launch in Japan on April 19, 2010.

And who better to give an electrifying performance than the beauty brand's Viva Glam spokesperson, Lady Gaga.

Dressed in all white, the eccentric singer mesmerized an equally eclectic audience of over 900 guests including Naomi Matsushima, Ms. Riisa Naka, and Ms Kyoki Kano by performing hits like "Speechless," "Allejandro," and "Bad Romance" on a one-of-a-kind MAC Viva Glam inspired piano designed and crafted by Canadian artist, Terence Koh.

Keeping in tune with the MAC AIDS Fund campaign to raise awareness on the challenges that women face in their fight against the disease, Koh's piano will be auctioned at the Donatella Verace/Anna Wintour "Art of Elysium" event on April 30 in where funds donated go to The Harlem Hospital's Family Care Centre, a program that provides comprehensive medical, psychological and social services to HIV infected children and their families.

To place your bid in an Earth Day auction with experiences and products donated by Stella McCartney, Vera Wang, Nina Ricci, Gucci, Proenza Schouler, and more, click here!