| 2019-08-27 |  Happy 300:Selected & Mixed By DJ DeeMan @ Happy Days Records @ 2019-08-26 | 2 | Deep House | Stratis Mantzoros - Piano Thoughts (Original Mix)5:42 | |
| 2019-02-17 |  7th Birthday Compilation @ Happy Days Records @ 2019-02-16 | 10 | Deep House | Stratis Mantzoros - Piano Thoughts (Original Mix)5:42 | |
| 2018-04-09 |  About The Call EP @ Happy Days Records @ 2018-04-09 | 1 | Deep House | Stratis Mantzoros - Piano Thoughts (Original Mix)5:42 | |
| 2018-04-09 | About The Call EP @ Happy Days Records @ 2018-04-09 | 2 | Deep House | Stratis Mantzoros - About (Original Mix)5:25 | |
| 2018-03-09 |  6th Birthday Compilation @ Happy Days Records @ 2018-02-17 | 31 | Electronica | Stratis Mantzoros - Love Me Tonight (2017 ReMake)4:43 | |
| 2016-02-09 |  Love Me Tonight @ Happy Days Records @ 2016-01-18 | 1 | Deep House | Stratis Mantzoros - Love Me Tonight (Original Mix)5:09 | |
| 2016-02-09 | Love Me Tonight @ Happy Days Records @ 2016-01-18 | 2 | Deep House | Stratis Mantzoros - Love Me Tonight (La Rose Remix)6:46 | |
| 2015-12-29 |  Happy Compilation, Vol. 12 @ Happy Days Records @ 2015-12-28 | 10 | Minimal / Deep Tech | Stratis Mantzoros - Syntheshe (Original Mix)7:02 | |
| 2015-08-31 |  System EP @ Happy Days Records @ 2015-08-31 | 1 | Minimal / Deep Tech | Stratis Mantzoros - Monday Morning (Original Mix)7:13 | |
| 2015-08-31 | System EP @ Happy Days Records @ 2015-08-31 | 2 | Minimal / Deep Tech | Stratis Mantzoros - Lost In Space (Original Mix)6:42 | |