The jump from 8- to 16-bit was one of the biggest shifts in video game history. Many beloved series saw a massive improvement in visuals and sound with the move from the NES to the Super Nintendo. Sprites were larger and more defined, environments included greater detail and flourish, and classic themes were remastered with the larger set of composition tools.
For example, the main theme from Ghosts n’ Goblins went from this:
For Super Ghouls n’ Ghosts, composer Mari Yamaguchi took the theme originally created by Harumi Fujita and Ayako Mori to the next level. The harrying melody and stark tone of the song is enhanced by the use of organ and brass samples. What was once a sort of arcade action theme transforms into a lively dirge that encourages the dead to rise again.
Of course, the march of technology means that games will continued to be remastered, along with their classic soundtracks. For the Sony PSP, Capcom released updated versions of many older games, including Mega Man, Mega Man X, and Ghosts ‘n Goblins. When the Ultimate version of this spooky arcade game moved to handhelds, an updated version of the Level 1 theme came with it.