Siti made her first and biggest appearance on the international stage during the 1998 Commonwealth Games which was held in Kuala Lumpur, Malaysia where she performed in front of Queen Elizabeth II and her consort, Prince Philip among other dignitaries and officials from 70 Commonwealth countries.
The ceremony was televised in 70 nations worldwide, which led her to become known in the international arena for the first time.
For the next few years, Siti took part in 'Voice of Asia 2002' which was held in Kazakhstan, where she performed one of her singles from her third album, Purnama Merindu and managed to grab the Grand Prix Champion title, the ultimate prize.
She was also invited in 2000 In the same year earlier in May, she took part in 'South Pacific International Song and Singing Competition 1999' held in Gold Coast, Queensland, Australia where she was crowned with the first place in the category of 'Pop/Top 40 for International Song' beating contestants from all over South Pacific through her single, We'll Be As One.that finally led her to be awarded with the Best Female Vocal Performance with the same single even though the single was judged by cassette tape/compact disc sent by her recording company to the organiser and not through live performance.The same song was also sung by each singer from each participating country in their native languages, where Siti's version which was in Malay, entitled Dunia Milik Kita was also performed for the first time during the event.she also sang a duet with Leehom Wang in a song called 月亮代表我的心 (The Moon Represents My Heart) which is a cover of the late Teresa Teng and as awards presenter alongside Taiwanese news anchor Patty Hou.she had to wake up at am to help her mother making and selling various homemade kuih in her neighbourhood, where sometimes, she also had to carry down three flights of stairs, a makeshift table to the main road to set up a small stall.
Apart from participating various local singing competitions, she also used to follow her uncle, Abdul Rahim Bachik to invitational shows like wedding ceremonies and dinner parties which have helped her giving the exposure of performing live.
Backed with 16 studio albums, she is one of the most popular artists in the Malay Archipelago and Nusantara region and she has been voted for Regional Most Popular Artiste ten times in a row beating other fellow artists from Malaysia, Indonesia and Singapore in the Anugerah Planet Muzik since 2001.
To date, she has sold more than 4.9 million in record sales.
During Bintang HMI competition, she met Adnan Abu Hassan, music composer who tutored and helped her with her vocal performance, before she finally winning the contest with the song by Aishah, Camar Yang Pulang (The Returning Seagull).
In 1998, at the early age of 19, she launched her own company on 12 January (a day after her 19th birthday), Siti Nurhaliza Productions (M) Sdn. which acts as the official management production to handle and manage her schedule.
The concert featured popular songs composed by Tan Sri P.