How to make a doorbell to "do you wanna build a snowman"

First make this shape with the different colors that you choose. This is about a 3 by 7 shape. The Black Wool is where I would be putting the Note Blocks and the Red Wool is where I put the Repeaters.

Take your first Note Block and right click it 18 times.

Then put your Repeater in front and bring it to 2 ticks (Right click it once).

Next take your second Note Block and place it in front of the Repeater. Hit this Note Block 18 times.

Take your second Repeater and bring it to 2 ticks (Right click it once).

Then take another Note Block and add one in front of the Repeater. Right click it 18 times.

Get another Repeater, place it in front of the Note Block and bring it to 2 ticks(Right click it once)Then after that just place another Note Block and right click it 13 times. (THIS STEP HAS 2 IN 1!)

After you place your Repeater and Note Block, turn right and place another Repeater bring it to 2 ticks (Right click once).

Then go up one again and place your Note Block and right click it 18 times.

Turn right again, place another Repeater and bring it to 2 ticks (Right click it once).

Your next Note Block that you take this time, has to be right clicked 22 times.

Next place another Repeater and bring that to 2 ticks (Right click once).

Next put another Note Block and right click it 20 times.

The next Repeater you need to put down, you need to bring it to 4 ticks (Right click it three times).

The last Note Block that you need to put down has to be right clicked 22 times.

Next take another block of Wool and place it behind the first Note Block that you put down, put one Redstone on top of it.

Take another block of Wool and make it diagonal to the one we put down before.

Then go in the inside of the block that you just put down and place down a Repeater, don't click on the Repeater at all. Just leave it how you put it.

Next place another block of Wool in front of the Repeater you juts put in, and put one Redstone on top of it.

Then get another block of Wool and place it diagonally with the one you put down before. Take another Redstone and put it on top so it attaches with the one you put on before.

Then put another Wool block on top, so it should sit like this. And place a button on the Wool too.

Take your Stone Slab and make a full block with it and then delete the top one. The final product of the step should look like the picture.

All of the steps are done! You can even put a platform down if you want! :)

When you press the button it should look this and hear the tone of "Do You Wanna Build a Snowman" from Frozen! Enjoy! :)