| 2016-02-26 |  The Sound of Drum & Bass 2016 (Viper Presents) @ Viper Recordings @ 2016-02-26 | 6 | Drum & Bass | North Base, ISVK - What R U Doing? feat. Ragga Twins (Trei Remix)4:44 | |
| 2015-12-11 |  Polarity EP @ Viper Recordings @ 2015-12-11 | 2 | Reggae / Dancehall / Dub | Ragga Twins, North Base, ISVK - What R U Doing? Feat. Ragga Twins (Original Mix)4:06 | |
| 2015-12-11 | Polarity EP @ Viper Recordings @ 2015-12-11 | 2 | Drum & Bass | North Base, ISVK - What R U Doing? feat. Ragga Twins (Trei Remix)4:44 | |