| 2025-02-14 |  Now @ Ultimate House Records @ 2025-02-14 | 1 | Progressive House | Christian Westerhof, Polanski - Now (Original Mix)3:41 | |
| 2025-02-14 | Now @ Ultimate House Records @ 2025-02-14 | 2 | Progressive House | Christian Westerhof, Polanski - Now (Extended Mix)5:54 | |
| 2024-12-13 |  Solo Para Mi @ Ultimate House Records @ 2024-12-13 | 1 | Melodic House & Techno | Christian Westerhof - Solo Para Mi (Original Mix)2:51 | |
| 2024-12-13 | Solo Para Mi @ Ultimate House Records @ 2024-12-13 | 2 | Melodic House & Techno | Christian Westerhof - Against the Crowd (Original Mix)3:13 | |
| 2024-12-13 | Solo Para Mi @ Ultimate House Records @ 2024-12-13 | 3 | Melodic House & Techno | Christian Westerhof - Solo Para Mi (Extended Mix)6:15 | |
| 2024-12-13 | Solo Para Mi @ Ultimate House Records @ 2024-12-13 | 4 | Melodic House & Techno | Christian Westerhof - Against the Crowd (Extended Version)6:46 | |
| 2024-11-15 |  Never Forget @ Ultimate House Records @ 2024-11-15 | 1 | Melodic House & Techno | Christian Westerhof - Never Forget (Original Mix)3:27 | |
| 2024-11-15 | Never Forget @ Ultimate House Records @ 2024-11-15 | 2 | Melodic House & Techno | Christian Westerhof - Never Forget (Extended Mix)6:36 | |
| 2024-09-20 |  Stellae Spectant Te @ Ultimate House Records @ 2024-09-20 | 1 | Melodic House & Techno | Christian Westerhof - Stellae Spectant Te (Original Mix)3:27 | |
| 2024-09-20 | Stellae Spectant Te @ Ultimate House Records @ 2024-09-20 | 2 | Melodic House & Techno | Christian Westerhof - Stellae Spectant Te (Extended Mix)6:38 | |
| 2024-04-05 |  Euphoria @ Ultimate House Records @ 2024-04-05 | 1 | Progressive House | Christian Westerhof - Euphoria (Original Mix)3:33 | |
| 2024-04-05 | Euphoria @ Ultimate House Records @ 2024-04-05 | 2 | Progressive House | Christian Westerhof - Euphoria (Extended Mix)5:41 | |