I really fell in love of many piano pieces that I find sampled in jazz-hop (jazzy hip-hop) tracks. However it's extremely hard to find either the original jazz tracks that were sampled or at least jazz music in similar style as these pieces I like.

So my only hope is that you help me recognize sampled tracks or point jazz albums/tracks of similar stylistics.

Here are my favourite tracks with piano samples. The question for each of them is: where is piano sample from (I tried like hundred ways to find this information but I failed ).

1. Gavintoo - Rainy Day ( http://www.youtube.com/watch?v=QURjAJPSQo0 ) or Lemongrass - Salon de Musique ( http://www.youtube.com/watch?v=eZKY3ZxYGpU ) - my absolute favourite!
2. Vee - Le Vent ( http://www.youtube.com/watch?v=bHd0pDFS7A4 )
3. Dj Okawari - Another Sky ( http://www.youtube.com/watch?v=VBqKxAB42eo )
4. Romantic Production - Boys'n the Hood ( http://www.youtube.com/watch?v=rUsnHrMSmZc )
5. Omega one - Memento ( http://www.youtube.com/watch?v=D6EOyBo0rHM )
6. Dj Okawari - A Cup of Coffee ( http://www.youtube.com/watch?v=NB092JuK--o )
7. Sound Providers - Autumns Evening Breeze ( http://www.youtube.com/watch?v=vDnpDgY_Im4 )
8. A.Y.B Force - Hardboiled ( http://www.youtube.com/watch?v=8oWxgLwp5pE )
9. Dj Okawari - Synchronize ( http://www.youtube.com/watch?v=UXTSuSYG20w )
10. Dj Okawari - Flower Dance ( http://www.youtube.com/watch?v=AULG4MoYxQk )

And this is only top 10 of my list! I would be really grateful for any help. Thanks a lot in advance!