MUSIC fans who liked by the performance of the ''Yellow River Piano Concerto'' by pianist Kong Xiangdong in February will be able to enjoy once again his musical skills when he returns to Hongkong next month. The pianist will give a solo performance on music pieces by Western composers at the City Hall Concert Hall on July 8 at 8 pm. At the age of 24, Kong already enjoys worldwide recognition as an artist with truly electrifying gifts. As one of the most active pianists today, he has won the first prize and four additional awards as the outstanding performer of solo and concerto works at the 1992 Fifth Sydney International Competition of Australia and the grand prize at the prestigiousGina Bachauer International Competition (1988). He is also the youngest prize winner ever in both Moscow's Tchaikovsky International Competition (1986) and Spain's Paloma O' Shea International Competition (1987). In the coming piano recital, Kong will play works by Mozart, Brahms, Liszt, Schumann and Rakhmaninov. Tickets for the Urban Council presentation, at $50, $75 and $100 (half-price for students and senior citizens), are available at all URBTIX outlets. For telephone reservation and more information, call 7349009 and 7342926.