How do you play the pipe tunes on mythology island?

Open the card for the reed pipe (Flute) and play the melodies by clicking on each of the 4 colored holes (blue green yellow red) -- each color plays a different musical note.

*The song for the Minotaur Door : blue-blue-green-yellow-yellow-red-blue-green

*The song for Cerberus : blue-green-yellow-blue-red-green