| 2019-02-17 |  7th Birthday Compilation @ Happy Days Records @ 2019-02-16 | 11 | Deep House | R-04, Romualdo About - Realize (Original Mix)5:24 | |
| 2018-04-16 |  Realize @ Happy Days Records @ 2018-04-16 | 1 | Deep House | R-04, Romualdo About - Realize (Original Mix)5:24 | |
| 2018-04-16 | Realize @ Happy Days Records @ 2018-04-16 | 2 | Deep House | R-04, Romualdo About - Realize (DJ Spin 20Th Vision Remix)5:34 | |
| 2015-12-29 |  Happy Compilation, Vol. 12 @ Happy Days Records @ 2015-12-28 | 5 | Deep House | R-04 - NightDive (Original Mix)5:29 | |