Infinite lives and level skip:
Enter TAEHC as a password. The number of lives remaining will always be 24. Pause the game and press X to skip to the next level.

Level	Location	Password
2	Hotel	WALKER
3	Restaurant	OVERTIME
4	Hospital	VILLA
5	Penthouse	ENDBOSS

Hint extra life:
Collect as many single notes and treble clefs as possible in order to get 1000 and an extra life.

Hint: Bonus areas:
Collect the colored notes in order to get an extra bonus level at the end of the stage.

At the beginning of the first level, jump to the top of the first tree, hover left to find a secret area, then shoot to go to bonus area.

Hint: Hover in mid-air:
Johnny can hover when falling or jumping by shooting downward.