If you want a game that accurately depicts the feeling you get when you step out onto the field and get ready for a game of the world's most popular sport... don't play this game. As one of Nintendo's first sports games back in 1985 Soccer doesn't have much going for it. It is a very basic game of soccer and it doesn't hold a candle to any of today's serious soccer titles. It's fun to play for awhile, but if you crave realism don't even bother.
The music is credited to a Nick Kondo, which is just an Americanized alias for Koji Kondo who wrote music for many of Nintendo's early games. Like most of the early NES games, the music leaves much to be desired. There are only six tracks and most of them are just simple little ditties. Nothing to write home about.
While the game was released for the Famicom Disk System, it does not take advantage of the add-on's RP2C33 chip, thus, giving an identical sound to the NES version.
(Source: Game ROM)
While there are no in-game credits, a full staff list can be seen be peeking into the game's ROM image in a hex editor. Though some of the developer aliases differ between the NES and FDS versions of the game, Koji's alias is the same between both versions.
Ripping NES music is a very arduous process that is beyond the scope of this site.