|Album#|English Title|Chinese (Traditional)|Chinese (Simplified)|Release date|Label|
|---|---|---|---|---|---|
|1st|Grown Up Overnight|一夜長大|一夜长大|September 17, 1999|Rock Records|
|2nd|Courage|勇氣|勇气|August 2, 2000|Rock Records|
|3rd|Shining Star|閃亮的星|闪亮的星|June 27, 2001|Rock Records|
|4th|Sunrise|我喜歡|我喜欢|February 7, 2002|Rock Records|
|5th|Beautiful|美麗人生|美丽人生|February 12, 2003|Rock Records|
|6th|Wings of Love|燕尾蝶|燕尾蝶|September 10, 2004|Rock Records|
|7th|Silk Road of Love|絲路|丝路|September 16, 2005|Rock Records|
|8th|Kissing The Future of Love|親親|亲亲|October 6, 2006|B'in Music|
|9th|j'Adore|崇拜|崇拜|November 9, 2007|B'in Music|
|10th|Fall in Love & Songs|靜茹＆情歌-別再為他流淚|静茹＆情歌-别再为他流泪|January 16, 2009|B'in Music|
|11th|What Love Songs Didn't Tell You|情歌沒有告訴你|情歌没有告诉你|December 24, 2010|Universal Music|
|12th|Love in Heart|愛久見人心|爱久见人心|August 10, 2012|Universal Music|

Question: what is the number of songs on rock records?
Answer: 7