You can't.
To play the song:
As the colored dots come down into the sections of the bar, press the key directly under that spot just as the dot gets there and disappears. You will have to move quickly on some to click the key just as the ball arrives in that section of the bar. Playing enough notes correctly will satisfy Snoopy and you can complete the challenge. Otherwise try again.
There is no pigeon on great pumpkin island.
The pumpkin patch is to the right on Great Pumpkin Island. It was the only area shown in the island preview.
There are no buildings or upper rooms on Great Pumpkin Island.
you grab the mask on the scarecrow and go into the house
The name of the island is Great Pumpkin Island. See the related question below.
you wait for the great pumpkin!
At the very end, there is a mysterious figure in the pumpkin patch!
well 1st go really slow and when you get stuck go to youtube i always do that
There is no potato farm on Great Pumpkin Island.
Great Pumpkin Island
The easiest island is great pumpkin but game show island is more funner and can you please add me eli1gh
The name of Poptropica's 15th island is "Great Pumpkin Island". Sadly, we never get to see the Great Pumpkin. But the solution to the island quest is at the related question below.