Classic Mega Man Compilation or Boku wa Rockan is a thirteen track album containing arrangements from the classic Mega Man series. The audio is done in mostly chiptune style and it sounds quite good. Among the artists who put this soundtrack together are, The Plasmas, NESMETAL, CJeey, H-Pizzle, Capcomposer, Thretris, kami68k, FantomenK and eLectrodreams The album has been available on stream for almost two years now. Unfortunately, stream is all that's available. There's no purchase listing for it or a download link. Any plans to release the album for purchase or free are unknown.
Still, stream is better than nothing at all. You can listen to the full album here. Man, that cover is awesome.