In Super Mario Bros.

I'm playing Super Mario Bros. for nes and every time I go underground like down in pipe areas and cave levels, the music and the sound stops. Then when i get it it comes back whats wrong with the game?

Give it a good cleaning. About 20 q-tips should do the trick.

would Q-TIPS alone do the trick?

I don't entirely get what you are saying, but if you mean the sound stops while you are traveling from one screen to the next, then that is supposed to happen.

I tryed A/V jacks on my Nes. And now it works much better. The picture is better and I can hear the music! Thankx guys for the help!