In the outside world, they may have been thieves, prostitutes or experienced fighters. Inside the correctional institutions these young offenders have become disciplined traditional Chinese Lion Dance performers, musicians and marchers. A group of youngsters aged 14 to 21 from Tai Tam Gap correctional institute, Cape Collinson correctional institution and Lai King training institute, serving sentences from six months to three years, will be beating retreat at Queen Elizabeth Stadium next month. The young performers were yesterday busy practising for their biggest performance of the year. Pipe major, Ah Yin, said he was looking forward for the day with both excitement and concern. 'I'm so nervous of performing in front of crowds especially because my parents will be there,' he said. Ah Yin was caught for possession of weapons at the age of 16 and has already served 20 months of what could be a three-year sentence at Cape Collinson correctional institution. Drum major Winnie's salvation also came through music. Winnie was caught for theft when she was 16. She is now 18. 'Through practice and performance, I regained my confidence,' she said.