Super Valis IV

Super Valis IV
Also known as: Super Valis: Akaki Tsuki no Otome (JP) Developer: Laser Soft Publishers: Laser Soft (JP), Atlus (US) Platform: SNES Released in JP: March 27, 1992 Released in US: February 1993 Released in EU: December 18, 2020 (Nintendo Switch Online) This game has a hidden sound test. This game has a hidden level select.

Stage Select/Sound Test

At the "Press Start" prompt of the title screen, quickly press Up, Down, Left, Right, Up, Down, Left, Right, Up, Down, Left, Right, Select, Select, Y, B, Start.

Also, while in-game, pause and press Select to cycle through the game's music.

(Source: GameFAQs)