This game has a notes page
Animorphs is a game that tries really hard and fails even harder to be Pokémon.
Verify if the first song in the GBS file is used anywhere in the game.
The full intro tune lasts approximately 56 seconds before looping, however only 23 seconds of it are heard in-game before it is cut off.
Every song is given a name in the game's code which is never seen in the game. They were meant to be shown in Fatass, the tool used by the developers to create the game's soundtrack. The full list can be found in the notes page (Notes:Animorphs). Some of the more interesting ones are listed here.
This one can be found at 0x27CA7:
Incidentally, this song is unused, but it's just silence anyway.
Present at 0x2C007:
This is the name given to one of the songs that plays during a battle. The name suggests that it may have instead been used for the intro in an early build of the game.
Present at 0x32625:
This is the jingle that plays at the start of each mission. Why it was given THAT name is anyone's guess...
A particularly juvenile one can be found at 0x3612E:
Another juvenile one can be found at 0x37180:
And finally, at 0x38007: