In your inventory you will need some materials. Black, white and red wool, repeater and buttons.
This is how it should be set up beforehand. Red wool is where the noteblocks will be placed and white wool is where repeaters will be placed.
This is how it should look after you have placed the repeaters and noteblocks. DO NOT HIT ANY. If you happen to hit a noteblock and cause it to change its sound, just simply break it and replace it.
The repeater stays as it is. You each individual noteblock the following amount of times. For the left noteblock 8, for the middle 22, right 12. DO NOT PLACE SIGNS!
Hit the repeater once, then do the note blocks. left noteblock (12), middle (22) and right (8)
Hit the repeater 3 times. Hit the left note block (12), middle (22), right (8).
Hit the repeater 3 times. Hit the left block 8 times, hit the middle block 18 times and hit the right block 12 times.
DO NOT TOUCH THE NEXT TWO REPEATERS.
Left noteblock (12), middle noteblock (22) and right noteblock (8).
Hit the repeater twice. Right note block (17) and left noteblock (13)
Next two repeaters are at 3 and the right noteblock is 13. The left noteblock is 1. THANKS, HOPE IT WORKS!