How many songs are in the album "Darkside Unleashed Sampler 4" by Rob Da Rhythm?

There are a total of 21 songs in "Darkside Unleashed Sampler 4".

When was the album "Darkside Unleashed Sampler 4" by Rob Da Rhythm released?

"Darkside Unleashed Sampler 4" was released on March 22, 2017.

#	Track	Artist	Key	Camelot	BPM
1	Tefached	Repix	B Minor	10A	101
2	This Is The Sound of The Hardbouncer - MC Mini Bouncer's Edit	Hardbouncer, Mc Adk	B Minor	10A	100
3	Ludes	The Real Legion	G Major	9B	95
4	Own Fucking Army!	Irate	G Major	9B	95
5	Murder Everything	Rhino	B Minor	10A	95
6	Pull The Plug	Miss Enemy	A♭ Major	4B	100
7	Blasta	Blaster	D♭ Major	3B	95
8	Its War	Sawtooth, Mr.Cuda	F♯ Major	2B	95
9	Together We Are Hardcore	Para Italia, Da Mouth of Madness	B Minor	10A	95
10	Beasting Out	Emergency Fuckerz	G Major	9B	180
11	Knocking Down Doors	Lost Origin	F♯ Minor	11A	168
12	What Ya Wanna Do	Para Italia	E Minor	9A	98
13	Mothers Like	Sonic, D-Vstor	A♭ Minor	1A	98
14	Little Snitch	Lunatic	C Major	8B	100
15	On The Beat	Audiostrike, Royal Pain	C Major	8B	100
16	D.F.W.M.	UKR Resistance	B♭ Minor	3A	100
17	F#cking Jump	Digital Violence	F Minor	4A	101
18	First Order	Hungry Beats	F♯ Major	2B	105
19	Overkill	Striker	F♯ Major	2B	115
20	Ragnarak	Blaserbass, MBK	E Major	12B	115
21	Sampler 4 - Continuous DJ Mix	Rob Da Rhythm, Various Artists	G Major	9B	96