Been a while, folks. Here're the complete musical scores to all six Mega Man games released for the NES. Breakdown below:

https://www.mediafire.com/folder/7tiae87gorg87/Rockman%20The%20Complete%20FC%20STRK%20Col.%20(201 6)

All tracks taken from ROCKCAN Sound E Can (Rockman 25th Anniversary) - CPCA-10264~73

Disc 01:

01~16: Rockman / Mega Man (1987)
17~39: Rockman 2: Dr. Wily no Nazo / Mega Man 2 (1988)
40~63: Rockman 3: Dr. Wily no Saigo!? / Mega Man 3 (1990)

Disc 02:

01~29: Rockman 4 Aratanaru Yabō!! / Mega Man 4 (1991)
30~54: Rockman 5: Blues no Wana!? / Mega Man 5 (1992)
55~80: Rockman 6: Shijō Saidai no Tatakai!! / Mega Man 6 (1993)

Bad link? "Folder not found"