I'm not exactly sure what notes, but in the music hall, there is a pot with flutes. Take one. I believe you need to talk to someone in there. You might have to give her something, but she'll give you the sheet music you need to play to put Cerberus go to sleep. I recommend writing it down so you won't have to try to remember it and keep looking back. I hope that helps.
you play the tune the statue gave you on your reed pipe.
You play the song that the statue taught you on your Flute that you got form the Apollo statue. Hope I helped :)
~Leah
To get Cerberus to fall asleep, first you need the Reed Pipe. You can get one in Apollo's temple, in the farthest room. Then go to Cerberus. Play this melody on the pipe: Blue, Red, Yellow, Blue, Red, Green. Cerberus should then fall asleep. Walk around Cerberus's head to get one of his whiskers, which is a Sacred Object!
Hope this helps!
Rainbow Dash! :D
Play the song one of the Muses gave you on your reed pipe. This will make Cerberus fall asleep and you can get its whiskers.
Blue,green,yellow,blue,red,green
you play the song that the statue gave you you have to get the pipe first and take her test by remembering what she plays
first make him fall asleep then click on him
spike his drink
Play the song the muse gave you on the pipe.
you give the shark a type of food that will make him fall asleep
Play the music on the reed pipe: blue green yellow blue red green, He will fall asleep and you can get a Whisker from him.
You need to play cerberus the pipe song that you get at apollo's music place. once you play it and make it fall asleep, click on on it and you will get the whisker
The mission is to save Professor Hammerhead and a little boy. Make sure you make the Great Booga fall asleep.
In the music castle, at the very end, you see a basket of free reed pipes. Click on it. Than inside the music castle there are statues. Look for the statue with a orange paper. Maybe. If not press on the other statues. When you find the right statue play the same songs she plays and she will give you the song to make Cerberus fall asleep.
The reed pipe is to make Cerberus fall asleep. You are a lot less gentle with the Hydra. Get close enough and it will try to hit you with one of its five heads. Before it can hit you, jump up, and land on the head when you come down. Repeat this for the remaining heads before any can revive. Swim under the Hydra to get a scale.