| Okładka | Wykonawca | Album | Rok | Gatunek | Typ |
|---|---|---|---|---|---|
 | KRAMARSKI, Ryszard, Project, The [PL] as tRKproject | Mr Scrooge | 2019 | progressive rock | L |
 | Landscape [PL] | Outside Of Nowhere | 2011 | progressive rock | L |
 | LEPIARCZYK, Krzysztof [PL] | Art Therapy | 2016 | progressive rock | L |
 | Liquid Shadow [PL] | Spectrum | 2008 | progressive rock | L |
 | Logic Mess [PL] | Element Of The Grid | 2012 | progressive rock | L |
 | Loonypark [PL] | Egoist | 2008 | progressive rock | L |
 | Loonypark [PL] | Straw Andy | 2011 | progressive rock | L |
 | Loonypark [PL] | Unbroken Spirit Lives In Us | 2014 | progressive rock | L |
 | Loonypark [PL] | Perpetual | 2016 | progressive rock | L |
 | Loonypark [PL] | Deep Space Eight | 2019 | progressive rock | L |