Use A Different Ship

Press Start, Select, A and B Simultaneously at the beginning of the game.

Sound Test

On the Game Over screen press Start, Select, A, and B Simultaneously.

Stage Select

Press Reset 13 Times on your Control Deck, and then press Start. Next press Left/Right to select the stage. Then select "Continue." Note: This only works on the first ten stages.

How do you consider this information:
1 2 3 4 5