For the song of the frogs the keys are:
Green frog:A button
Blue frog:left C
Yellow frog:down C
White frog:up C
Pink frog: Right C
The song itself is:
A-Left-right-down-left-right-down-a-down-a-down-right-left-a
More tricks, tips and cheats for this game are right here - Zelda 64: Ocarina of Time cheats
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