Sound Test
Hold L + R and press Start when the text “Press Start” begins flashing at the title Screen.

Level Select
Hold X + Y, then press A(4), B(4), A, B, A, B, A, B, A, B when the text “Press Start” begins flashing at the Title Screen. Enter this code again on the Level Selection Screen to select a specific stage within that level. Alternatively, hold X + Y and press A, B, A(4), B(4), A, B, A, B, A, B, A, B at the Title Screen.