Elva Hsiao (蕭亞軒; 萧亚轩; Xiāo Yǎxuān), also known as Elva Siu, is a Taiwanese Mandopop singer.
She speaks and writes English, due to studying abroad at John Casablanca's College in Vancouver, Canada. While in Vancouver, she attended the New Talent Singing Awards Vancouver Audition in 1998 with her birth name of Hsiao Ya-chih (蕭雅之). She became one of the 12 finalists but did not place in the top 5. The song she sang was CoCo Lee's "Love Me A Little Longer (Chinese: 愛我久一點)". Also in that competition there were 3 other Taiwanese recent singers, 183 Club member Jacky Chu 祝釩剛 (who was the winner), DJ Ruby Lu 盧春如 (1st Runner-Up) and 蜜雪薇琪 (Michelle*Vickie) member Michelle Hsu (now known as Mimi or Michelle).
Elva was originally signed to Virgin Records Taiwan, a sub-label of EMI, which created the stage name 蕭亞軒 for her. Her self-titled début album in 1999 sold over 1 million copies in Asia and cemented her status in the Chinese music industry. 
Elva Hsiao sang the song "U Make Me Wanna", which appeared on her album Love's Theme Song, Kiss (2002), with British boy band Blue. Virgin Records and Elva parted ways in summer of 2004.
For a year, Elva rested as record companies fought over her next contract. It ended up becoming a battle between Warner Music Taiwan and Sony BMG, with Warner Music winning the battle in the end. Elva signed into Warner Music on March 23rd, 2005, making her Warner Taiwan's "fifth diva" (after Sammi Cheng, A-Mei Chang, Na Ying, and Stefanie Sun). Fans were overjoyed at this, and waited for the coming of a new album, which Warner had promised would be released in June 2005.
However, Warner Music Taiwan faced some serious issues during this time, including executives resigning and a change of staff members. Many other Warner artists (including Stefanie Sun, Machi, A-Mei, and F.I.R.) were affected and did not see much promotion. However, none faced as much trouble as Elva, whose album was delayed until September, then October, then November, December, until Warner announced that the album would be delayed indefinitely. This angered the fans, who had been waiting patiently. Their protests spammed the forums of Warner Music Taiwan, causing the entire website to be out of service for a week.
In February 2006, however, a Warner representative promised in an interview that the album would be released around late March/early April. It was only a few weeks later that magazine articles reported another change of staff members and the possibilities of the album being delayed into late April/early May.
In June 2006, she released a new single, entitled "The World I Want" [我要的世界].
In October 2006, the delayed album still had not been released, although Elva announced that it would be released in December. At that time she was in Los Angeles working on dance choreography. In addition, she released another new promotion single entitled "Elva Is Back", a fast catchy song featuring electro beats and raps. A dance song “Confession”(表白) made the top 10.
Elva and Warner Music announced in November that her newest album would be released on 22 December. The album is entitled , signifying the number of days Elva had been absent from the Mandopop scene.
She released the music video for her single called "Confession" in mid-2007. Her second single is called "L.o.V.E". Her third single is called "Not Far Away". Her fourth single is called "The Ambassador. Her fifth single is called "Honey Honey Honey". Her sixth single is called "My Boyfriend".
Back to EMIEdit
After the contact with Warner Music, Elva decided to switch back to EMI Virgin Records in 2008. She described the switch as "going back home" as she was among the first few artists signed by Virgin Music Chinese in 1999 when the division was first established. Some critics also commented Elva was avoiding the back of Warner's original General Manager Sam Chen who has a bad name in Chinese music industry in controlling and creating fake statistics for his artists. The rumored contract cost EMI over NT$250 million which is over HKD 60 million or about USD 8 million. Johanna Wang, President of EMI Music Taiwan commented that the action of signing Elva was proving they (EMI) are not going to quit the Chinese music scene. Instead, they would create a new entertainment empire spanning over film productions, artist management, concert production, publishing and both digital and traditional music industries.
Elva's first album back with EMI,三面夏娃, was originally set to be released in late May 2008. But due to the delay in production and of China's approval due to the Olympic Games=, the album was pushed back and released on 13 June 2008. 
Elva switched her record company to Gold Typhoon along with Gold Label Record's acquisition of EMI Music Taiwan in August 2008.
- Elva Hsiao Self-Titled Album (蕭亞軒同名專輯 Xiao Ya Xuan Tong Ming Zhuan Ji) (1999) EMI
- Red Rose (紅薔薇 Hong Qiang Wei) (2000) EMI
- Tomorrow (明天 (音樂專輯) Ming Tian) (2001) EMI
- 4 U (4U) (2002) EMI
- Love's Theme Song, Kiss (愛的主打歌·吻 Ai De Zhu Da Ge, Wen) (2002) EMI
- In Love With Love (愛上愛 Ai Shang Ai) (2003) EMI
- Fifth Avenue (第五大道 Di Wu Da Dao) (2003) EMI
- 1087 (1087 Yi Ling Ba Qi) (2006) Warner Music
- 3-Faced Elva (3面夏娃 San Mian Xia Wa) (2008) EMI
- Diamond Candy (鑽石糖) (2009) EMI
Collections and compilationsEdit
- Beautiful Episode (首選蕭亞軒‧美麗的插曲 Mei Li De Cha Qu) (2004) EMI
- Love Elva... Remix & More (最熟悉的...蕭亞軒 Zui Shu Xi De...Xiao Ya Xuan) (2006) EMI