Conversation so far:
When was Kim Jae-joong's first solo album released?
Kim Jae-joong's first full-length solo album, WWW was released on 29 October 2013.
Did Kim Jae-joong's first album WWW  receive any awards or recognition?
How many solo albums has Kim Jae-joong released?
As a solo artist, Kim Jae-joong has released two studio albums, WWW and No.X

Question: how many songs are the in his second album?
Self-contained rewrite: how many songs are the in Kim Jae-joong's second album?