sounds needed for games

sounds needed for the game , a few basis sounds would be music , two types would be needed basic music for the game, i'm thinking like retro arcaded style music with a sci/fi theme to it ,for the games music  the other music will be for the boss and harder levels and will be more like a chase soundtrack to give you more suspense and intensity to the harder parts of the game,
the other sound effects i will need to focus on are the action sounds such as....
explosions , laser shots , asteroids, when that are traveling at you and also a low heath noise like a heart beat or something , i don't think ambient sound will be needed for this game as it is a flash game and just the basics will be needed '
, .....another thought i had was on my stars screen to have a  more of a heroic up beat audio track with a picture of q ship traveling through space (motion tween on back ground) with a cool looking game title , also i was thinking having a boss enter the intro screen and bite the logo ,