THE Jitro Czechoslovak Girls' Choir, which is among the best choirs in Europe with achievements in several national and international competitions, will perform at the Hong Kong Cultural Centre this month. Founded in 1973, Jitro was quickly recognised as one of the best choirs in Czechoslovakia and its reputation was further enhanced when Jiri Skopal became the principal choir master in 1977. Jitro has an extensive repertoire which ranges from 16th century polyphony to contemporary music. The choir's honours include championships for the ''Golden Palm'' in Olomouc in 1979 and the ''Golden Laurel'' in 1980. It was also the outright winner at the largest Czech competition, ''The Songs of Friendship'', in 1982. In 1988, Jitro took first prize out of 36 choirs from around the world at one of the most competitive choral festivals held in Liangolen, Wales. It was also the champion at the fourth international children's choir meeting in France in 1989. This is the first visit by Jitro to the East to feast music lovers in this part of the world with their musical talent. The choir will give one performance at the Hong Kong Cultural Centre Concert Hall on August 18 at 8 pm. Tickets at $120, $100, $80 and $60 are available at URBTIX outlets, with half-price for students and senior citizens. There is a 10 per cent discount for each purchase of six to 15 tickets, 20 per cent discount for 16-30 tickets and 30 per cent discount for over 30 tickets. For enquiries and reservations, telephone 734-9009.