Wang Jie/Shanghai Daily news

The "Sound of Harmony," the most expensive piano from Steinway's Art Case Collection, will be used as a special performance instrument at the 2010 Shanghai World Expo, according to Alvin Wu, account manager at Steinway Piano Shanghai.

With a market value of 8 million yuan (US$1.17 million), the 2.7-meter-long piano features the inlaid image of "Peacock," a traditional ink-wash painting by Shi Qi, a renowned Chinese artist.