The muse Euterpe (in the Temple of Muses) teaches you the song to lull Cerberus to sleep: blue green yellow blue red green.
You have to jump over him.
go to the underworld and play it on the dogs
To get the ring you play a song to get it to give it to you or find a specal feature
All you need to do is memorize the notes that she makes you play.
u talk to one of the stachues
She means in order to charm Cerberus, you need to learn a song on the reed pipe, then play it for him in the Underworld. (Reed pipes available in Temple of Apollo in Grove of Temples.)
you use the song that the muses gave you and play it on the Flute thing
Enter the realm of Hades using the pomegranates, jump down to the river, and cross it to find Cerberus. Play the song from Euterpe with the reed pipe to lull the beast. (blue-green-yellow-blue-red-green)
The song is *blue blue green yellow yellow red blue green*
You click on the colors around the reed pipe you get from Apollos temple
you use the song that the muses gave you and play it on the flute thing
the notes in order are: blue, green, yellow, blue, red, green.