Eighteen classical piano/hip-hop musical tracks.

OST 5 Preview: https://www.youtube.com/watch?v=5VDhNtLsiMU&list=PLoYqlzL_XZtKiW4jNZVw1S9vGFXYhN_mi

OST 6 Preview: https://www.youtube.com/watch?v=vr886bAN60E&list=PLoYqlzL_XZtKBsrCSqMgD3qJG0byQaBuG