A mixture of various Doom 3D-Game music themes played at the piano.
List of the musics:
D_INTROA
D_E1M1
D_E1M2
D_E1M3
D_E1M4
D_E2M2
D_E2M3 (D_INTER)
D_E2M8
D_E2M9 (D_E3M1)
D_E3M2
D_E3M8
D_MESSAG
D_DOOM
D_ROMERO
D_DEAD
D_AMPIE
D_TENSE
?
? (just guess. hehehe!)