How many songs are in the album "樂觀，不樂觀" by Various Artists?

There are a total of 20 songs in "樂觀，不樂觀".

When was the album "樂觀，不樂觀" by Various Artists released?

"樂觀，不樂觀" was released on December 9, 2014.

#	Track	Artist	Key	Camelot	BPM
1	樂觀	Joey Yung	E Major	12B	96
2	把砒霜留給自己	Ken Hung	C Minor	5A	117
3	心灰 (國)	Sherman Chung	A Minor	8A	75
4	獨活	Ken Hung	B Major	1B	131
5	因為瞭解, 所以分手?	Leo Ku	E♭ Major	5B	147
6	我不好愛	Eason Chan	D Major	10B	71
7	現實不重要 (國)	Adason Lo	G Major	9B	126
8	活著	Charlene Choi	D Major	10B	146
9	洗澡	Mag Lam	F Major	7B	144
10	但願明天一醒世界末日	Charlene Choi	A♭ Major	4B	94
11	中和點	Swing	E Major	12B	110
12	給你	Anthony Wong	B Major	1B	76
13	失戀太少	Eason Chan	G Major	9B	79
14	你還是疼我的 (國)	Joey Yung	C Major	8B	94
15	不幸的人	Nicholas Tse	F Major	7B	78
16	胡桃樹	Ken Hung	A Minor	8A	91
17	人比人	Twins	F Major	7B	110
18	若無其事	Deep Ng	A Minor	8A	140
19	自得其樂	Swing	F Major	7B	139
20	情歌的情歌	Joey Yung	E Major	12B	142