Recital at Warbler's Nest
You will need to have completed the sidequest "Find Kheel" first. Learn more about it here. After you have chatted with Kheel you'll discover that she had sisters who were supposed to arrive to Warbler's Nest to rehearse.
Your job is to find the other four sisters and get them all to Warbler's Nest.
Go to the cooking pot at Rito Village and you will find Genli, one of the sisters. She will complain that she cannot sing until she has gotten a special meal, a salmon meuniere. She also will inform you that her sisters went to go gather the ingredients.
Cree is the easiest to find. She is hanging out in the General Store at Rito Village and will hand you the Goat Butter she just purchased before going to join Kheel.
Notts, the pink little Rito, is up on top of Rito Village. Go up as high as you can on the spiral staircase that goes around the stone column and then climb up and right. You will hear cute, little singing. Talk to Notts and she will leave for Warbler's Nest, leaving you with Tabantha Wheat. The other sisters will also have similar ingredients, so hold onto them.
Kotts is the furthest away. Leave the stone column part of Rito Village. Cross the east bridge and she is splashing away in a small pond to find the salmon. Talk to her and she will leave you Hearty Salmon before departing.
Go back to the cooking pot where Genli is waiting and drop in one of each ingredient. Feed the meal to Genli and she will depart for Warbler's Nest.
Now you want to go meet them there. Travel to Warbler's Nest however you choose to and talk to Kheel. She will offer you a Korok Leaf. If you don't already have one, you will need it to complete this Shrine Quest. Drop something (you can pick it up later) and take the Korok Leaf.
The sisters are singing in a unique order and the five stone columns each correspond to the sisters. From left to right, you can assign each of the sisters a number from 1 to 5. Each stone column then has spines on top ranging from one spine to five spines. In the order the sisters sing their notes, you will want to wave the Korok Leaf to funnel wind through the hole in the middle of the stone columns.
The order is as follows: 4, 5, 3, 1, 2. Blow the Korok Leaf through the stone columns in that order based on the number of spines each column has.
The Voo Lota Shrine will rise up nearby, much to the delight of Kheel and her sisters, who will then return to Rito Village. With that, the Shrine Quest is complete.