How many songs are in the album "Mask OST" by Various Artists?

There are a total of 27 songs in "Mask OST".

When was the album "Mask OST" by Various Artists released?

"Mask OST" was released on July 29, 2015.

#	Track	Artist	Key	Camelot	BPM
1	Mask	Various Artists	B♭ Minor	3A	84
1	Only One Day	Lyn	B♭ Major	6B	137
2	Sick	ZICO, Sojin (GIRL'S DAY)	C Minor	5A	87
2	Doppelganger	Various Artists	D Major	10B	109
3	One person	Moon Myung Jin	D Major	10B	129
3	Poor rich	Various Artists	B Minor	10A	170
4	As if I'm dead	Chancellor, BILL STAX	B Major	1B	76
4	One man who can cry on	Various Artists	F Major	7B	107
5	Ambition	Various Artists	D Minor	7A	117
5	Tell me a lie	Navi	G Major	9B	92
6	Under The Mask	Various Artists	G Minor	6A	110
6	No love	Byul ha (HeartB)	F Minor	4A	136
7	Decalcomanie (feat.JOOHEON of Monsta X)	Junggigo	B♭ Major	6B	118
7	Best choice	Various Artists	C Minor	5A	118
8	Pleasant memoryies	Various Artists	B♭ Major	6B	150
8	Where	Yoon Do Hyun	B♭ Major	6B	140
9	I miss you	SEO EUNKWANG, MIYU	D♭ Major	3B	134
9	The mask of me	Various Artists	F Major	7B	100
10	Only One Day (inst)	Lyn	B♭ Major	6B	138
10	Target	Various Artists	F Minor	4A	113
11	Tears	Various Artists	G Minor	6A	71
12	Symbiotic	Various Artists	A♭ Major	4B	98
13	Another life	Various Artists	C Minor	5A	165
14	Determination of the moments	Various Artists	G Major	9B	71
15	Nonsense	Various Artists	G Minor	6A	120
16	Sloppy man and wife	Various Artists	A Minor	8A	130
17	Apparently one	Various Artists	F Minor	4A	172