[citation needed] Chang made her debut in 2007 as a singer after winning the first season of Taiwanese singing competition Super Idol (超級偶像)[3] and signed to label Gold Typhoon.

Chang released her first album Unprecedented (破天荒) on May 8, 2009; in its first week, it started at #3 on local music charts, but then rose to #1.

[citation needed] She also participated in a group song with various artists on the 10th anniversary of the 1999 Jiji earthquake called "Let love turn the whole universe" (讓愛轉動整個宇宙).

[6] In March 2010, Chang and Kevin Lin, one of the judges of Super Idol, sang a duet called "When Did We Start to Forget" (怎麼開始忘了).

[8] Chang and members of the Taiwanese boy band Lollipop (棒棒堂) collaborated and released a single, "義氣", which she also composed herself.

It relayed her journey in Japan and articles and stories written by her, including anecdotes such as a three-year-old boy proposing marriage to her.