How many songs are in the album "Hip Hop retten" by Ono, Kemp?

There are a total of 18 songs in "Hip Hop retten".

When was the album "Hip Hop retten" by Ono, Kemp released?

"Hip Hop retten" was released on 2015.

#	Track	Artist	Key	Camelot	BPM
1	Intro	Ono, Kemp, RANO	A Minor	8A	170
2	Mic Is Loud	Ono, Kemp, Keno	B♭ Minor	3A	88
3	Liebe	Ono, Kemp, Franky Kubrick	A Major	11B	177
4	Versteh doch	Ono, Kemp	A Minor	8A	174
5	Rockboys	Ono, Kemp, Metaphysics	F Major	7B	90
6	Veränderung	Ono, Kemp, El Da Sensei	G Major	9B	88
7	Ohne Ende	Ono, Kemp	D♭ Major	3B	179
8	Meinungen	Ono, Kemp	E♭ Minor	2A	89
9	Get Down	Ono, Kemp, Alex	G Minor	6A	92
10	Club Joint	Ono, Kemp	D♭ Major	3B	179
11	Voices	Ono, Kemp	G Minor	6A	92
12	Träume	Ono, Kemp, Sir Defekt, Kon Sci	A Minor	8A	174
13	Süchtig	Ono, Kemp, Fab Rush, Rid	A Minor	8A	170
14	Troubles	Ono, Kemp, Lakmann	B♭ Minor	3A	85
15	Competition	Ono, Kemp, Jinx	A♭ Minor	1A	178
16	Never Change	Ono, Kemp, Red PIll	B Major	1B	91
17	Liebe - Remix	Ono, Kemp, Christopher Kemper	A Minor	8A	174
18	Troubles - Remix	Ono, Kemp, Christopher Kemper	G Minor	6A	170