Matt Kowalsky

- Sweet Love 2K6
- Nowy Plan · 2007
- Chcemy Byc (feat. Bolec)
- My Grey Test Hits, Vol.1 · 2016
- Supertwarz
- Swing Diskoteka · 2010
- Underwater Sounds (feat. Tomek Nowak)
- My Grey Test Hits, Vol.1 · 2016
- Latino (feat. Guzik)
- My Grey Test Hits, Vol.1 · 2016
- Summer Trace
- Code · 2010
- Supertwarz (feat. Marzena)
- My Grey Test Hits, Vol.1 · 2016
- Nobody Has to Believe
- Nowy Plan · 2007
- Astoria Station (feat. Buslav)
- My Grey Test Hits, Vol.1 · 2016
- Cannon Music
- Nowy Plan · 2007
- Nim Wroci Swit (feat. Ewa Szlachcic)
- My Grey Test Hits, Vol.1 · 2015
- Fighter
- Fighter - Single · 2020
- Badz Jaki Chcesz (feat. Zaneta Lubera)
- My Grey Test Hits, Vol.1 · 2016

Code

2010
Nowy Plan

2007

Fighter - Single

2020
Samotnie (Radio) - Single [feat. Piotrek Świderski] - Single

2016

My Grey Test Hits, Vol.1

2016