| 2025-01-02 |  SUBZONIK @ Black Leather Records @ 2025-01-02 | 1 | Techno (Raw / Deep / Hypnotic) | karl Rotciv - High Tech (Original Mix)8:48 | |
| 2025-01-02 | SUBZONIK @ Black Leather Records @ 2025-01-02 | 2 | Techno (Raw / Deep / Hypnotic) | karl Rotciv - Subzonik (Original Mix)7:04 | |
| 2025-01-02 | SUBZONIK @ Black Leather Records @ 2025-01-02 | 3 | Techno (Peak Time / Driving) | karl Rotciv - Subzonik (Karl Rotciv Remix)7:12 | |
| 2025-01-02 | SUBZONIK @ Black Leather Records @ 2025-01-02 | 4 | Techno (Raw / Deep / Hypnotic) | karl Rotciv - Subzonik (X Metrik)7:04 | |
| 2021-04-24 |  Numerikals @ Black Leather Records @ 2021-04-24 | 2 | Techno (Raw / Deep / Hypnotic) | karl Rotciv - X38420 (Original Mix)6:00 | |
| 2021-04-24 | Numerikals @ Black Leather Records @ 2021-04-24 | 3 | Techno (Raw / Deep / Hypnotic) | karl Rotciv - X39293 (Original Mix)5:42 | |
| 2021-04-24 | Numerikals @ Black Leather Records @ 2021-04-24 | 4 | Techno (Raw / Deep / Hypnotic) | karl Rotciv - IX92393 (Original Mix)7:36 | |
| 2021-04-24 | Numerikals @ Black Leather Records @ 2021-04-24 | 5 | Techno (Raw / Deep / Hypnotic) | karl Rotciv - IX8367 (Original Mix)6:16 | |
| 2021-04-24 | Numerikals @ Black Leather Records @ 2021-04-24 | 6 | Techno (Raw / Deep / Hypnotic) | karl Rotciv - X48493 (Original Mix)6:08 | |
| 2019-04-08 |  Urban Tenors, Capital Techno Tribute @ Black Leather Records @ 2019-04-08 | 1 | Techno (Peak Time / Driving) | karl Rotciv - Konsecutive & Reaktion (Original Mix)5:15 | |
| 2019-04-08 | Urban Tenors, Capital Techno Tribute @ Black Leather Records @ 2019-04-08 | 2 | Techno (Peak Time / Driving) | karl Rotciv - Kontrol Und Integration (Original Mix)5:18 | |
| 2019-04-08 | Urban Tenors, Capital Techno Tribute @ Black Leather Records @ 2019-04-08 | 3 | Techno (Peak Time / Driving) | karl Rotciv - Deep Waters (Original Mix)7:31 | |
| 2019-04-08 | Urban Tenors, Capital Techno Tribute @ Black Leather Records @ 2019-04-08 | 4 | Techno (Peak Time / Driving) | karl Rotciv - 69hz Of Pleasure (Original Mix)4:30 | |
| 2019-04-08 | Urban Tenors, Capital Techno Tribute @ Black Leather Records @ 2019-04-08 | 5 | Techno (Peak Time / Driving) | karl Rotciv - 798 Hours (Original Mix)7:02 | |
| 2019-04-08 | Urban Tenors, Capital Techno Tribute @ Black Leather Records @ 2019-04-08 | 6 | Techno (Peak Time / Driving) | karl Rotciv - Lust And Algoritmus (Original Mix)2:41 | |