It was a soft spring morning, with a sky as blue as grandma's apron when she irons, and a light breeze that made the market curtains sway. At the Market of Seven Scents there were happy voices, colors everywhere, and an air that felt like a big hug.

Lily, Ziggy, Skye and Dash walked between the stalls holding hands. Lily had bright blue eyes and an idea in her head.

"Let's play the smell game!" said Lily in a strong voice. "Whoever guesses more scents wins."

"I'm in!" shouted Ziggy, hopping on one foot.

"Alright," whispered Skye, who always spoke softly.

"I'm going to win!" laughed Dash, who was fast even with his nose.

They closed their eyes one by one. Skye sniffed and said: "Strawberries!"

Dash sniffed and said: "Stinky cheese!" and he laughed, because smelly things made him giggle.

Ziggy sniffed and said: "Mint!"

Lily took a deep sniff and said: "Rosemary... and bread."

At that word, "bread", everyone stopped.

In front of the bakery stall, sitting on a wooden crate, was Brunello the baker. He had an apron all covered in flour, a short white beard, and his head in his hands. He looked like a very sad sack of flour.

"Brunello, why are you so sad?" asked Lily, stepping closer carefully.

The baker lifted his face. The tip of his nose was white with flour. "Oh children... I've lost the recipe for my best bread. I can't remember it anymore. And without that recipe, the village bread tastes like nothing."

Ziggy squeezed his fists. "That's not fair!"

Dash put his hands on his hips. "We'll find it!"

Skye looked at Brunello kindly. "Don't worry."

Lily decided right away: "Let's go look for it."

Just then, something magical happened. From the sky, petals began to fall. They were pink and yellow, light as breath, and they smelled like a spring garden. They fell on the stalls, on hats, on baskets. It was the first petal rain of the season.

Ziggy opened his mouth to catch one. Dash jumped up to grab one in mid-air. Skye put one on her palm and smiled. Lily, with a yellow petal in her hair, had a heart beating hard with wonder.

CHUFFFF CHUFFFF!

From behind the market came a happy white cloud of smoke. It was Toby the Magic Train, with his smiley face and wheels spinning. He stopped in front of the children and puffed calmly.

Then Toby spoke, as he always does, in rhyme:

"CHUFFFF CHUFFFF, climb up, little friends of mine,
I'll take you far where the bright stars shine!
Up past the market, through rays of the sun,
a wise friend is whistling for everyone!"

The children hopped on quickly. Brunello waved his floury hand. "Good luck, little ones!"

The train left through the petal rain. It climbed higher and higher, turning around the village bell tower. From the window they could see the Market of Seven Scents become tiny like a colorful handkerchief.

Toby stopped in front of a big door. It was a door floating in the sky, made of light wood, with a brass handle shaped like a leaf.

"It's... a door in the air!" said Lily, with wide eyes.

"But where are we?" asked Ziggy.

"Look up there!" pointed Dash.

Above the door, on a wooden sign, were the words: Library of Clouds.

A library is a place full of books, like the one where Skye goes on Saturdays with her mom Ellie. But this one was different: it was very high above the market, made of old wood and soft stone. Inside were shelves that went all the way up to the ceiling, rope ladders that swayed gently, and rays of sun that came through the windows and made the dust sparkle like gold.

The children tiptoed in. Everything was quiet. A lonely book, forgotten on a little table, gave a yawn.

"Fweeee... fweeee... tirileee..."

A sweet, musical whistle came from up high.

Between the wooden beams, right under the roof, was a blackbird. He had black feathers with purple shine, small wise eyes, and a little leg with a silver bell tied with a ribbon.

"Good morning, children," said the blackbird. "My name is Cornflower. I've been here for so long, and I thought no one would ever come to visit me again."

"You're a talking blackbird!" marveled Ziggy.

"I'm a wise blackbird," answered Cornflower with a grandpa smile. "And very old. I remember all the melodies heard at the market for fifty years. What brings you here?"

Lily took a step forward. "Brunello has lost the recipe for his best bread. Can you help us?"

Cornflower closed his eyes. "Ah, that recipe. Brunello always hummed it while he kneaded. I remember the melody. But I can't read, and the recipe is written in a book... hidden here inside."

"And how will we find it?" asked Skye, looking at the endless shelves.

"Follow my whistle," said Cornflower. "Every note speaks of something. And my little bell tinkles when a melody holds a truth. It will guide you."

Cornflower fluttered down, landed on a shelf, and began.

"Fweeee fee-fee... tirileee..." The whistle was sweet, like when grandma hums in the kitchen.

"This note speaks of wheat," explained the blackbird.

Dash, who was the fastest, ran to a rope ladder. "I'll climb!" He scrambled up and down, light as a little monkey.

Skye, calmly, began to open the dusty books one by one, with delicate fingers. She didn't skip pages — she turned them like they were butterflies.

Lily kept her ears open, listening to the little bell: tink... tink... tink...

Ziggy jumped from shelf to shelf to look fast.

"Here's a book about wheat!" said Dash, grabbing a yellow volume.

But Cornflower's little bell stayed quiet.

"That's not the one," said Lily. "The bell isn't ringing."

"Okay, I'll find another!" said Dash, not giving up.

Cornflower whistled again. The second note spoke of oven and flour. Skye opened one book and then another, until she found a book with a drawing of a warm oven. The bell went... tiiink... but only a small sound.

"We're getting close!" said Lily.

Just then came a low grumble. Broooom... Broooom... It came from far away, like the belly of a hungry giant. It was a thunderstorm grumbling in the distance, behind the mountains.

The library got a little darker. The sun rays grew faint. Lily gave a little gasp. Her eyes shone with fear.

Ziggy stopped, came back, and took her hand. "I'm right here with you."

"It's far away," whispered Skye. "It won't reach us."

"Listen to my whistle," said Cornflower calmly. "The melody is stronger than the thunder."

And he whistled. The whistle was sweet as honey, and the little bell began to tinkle like a necklace. Lily closed her eyes and listened. Her fear melted away like butter on warm dough.

Cornflower sang the third note. It spoke of stars fallen in the flour, a strange line the baker hummed when he kneaded in the evening.

"Stars fallen in the flour?" asked Ziggy. "What does that mean?"

"It means the little anise seeds," explained Cornflower. "They are small and black like tiny stars falling on the white. Anise is a sweet-smelling plant you put in bread to give it a special flavor."

Skye opened her eyes. "So the book must have a drawing with little stars!"

The children looked more carefully. Dash climbed again. Skye turned pages with care. Lily, with Ziggy's hand in hers, followed Cornflower's little bell.

"Tink tink tink tink!" The bell rang loud.

Lily looked up. High up, in a dusty little nook, was a dark blue book, closed with a golden ribbon, with tiny silver stars on the cover.

"That one!" said Lily.

Dash climbed up lightly and took it. He came down with the book held tight to his chest. Skye put it on a little table. Lily untied the ribbon.

When they opened the book, something happened that no one expected. From the right page came out a little scented cloud. It smelled of warm bread, of golden crust, of happy yeast. The little cloud floated away gently, flew out the window, and drifted down the walls of the Library of Clouds all the way to the Market of Seven Scents.

The children ran to the window. Below, at the market, they saw the little cloud wrap around Brunello. The baker sniffed, sniffed again, and suddenly his eyes opened wide. He remembered! He started kneading right away with a huge smile.

Lily turned to Cornflower. The blackbird had shiny little eyes.

"What is it, Cornflower?" asked Lily sweetly.

"Nobody listened to me anymore," said the blackbird, his voice a bit cracked. "I've been whistling alone for so many years."

"Then we'll come back to visit you," said Lily firmly. "Every week."

"I'll bring you a breadcrumb," promised Ziggy.

"I'll bring you a drawing," said Skye.

"And I'll bring a colorful feather!" added Dash.

Cornflower laughed, with a happy whistle, and the bell tinkled like it hadn't in such a long time, because those words were all true.

CHUFFFF CHUFFFF!

Toby the Magic Train called them from the floating door. The faraway storm had gone quiet, and from the market rose the scent of warm bread that made everyone's mouth water.

The children said goodbye to Cornflower and hopped on the train. The blackbird whistled a goodbye from the window, and the little bell answered with a tinkle.

Toby left with his rhyming voice:

"CHUFFFF CHUFFFF, we're heading back home, nice and slow,
with big happy smiles and warm bread to show!
A true friend is the greatest treasure to hold,
worth more than all the silver and gold!"

The train went gently down through the pink and yellow petals still falling from the sky. At the Market of Seven Scents, Brunello pulled steaming loaves from the oven, and people lined up smiling.

Lily looked at her friends. "We did it together."

"Alone we wouldn't have made it," said Ziggy.

"Friendship is a treasure," whispered Skye.

"The yummiest treasure in the world!" exclaimed Dash, sniffing the bread.

And as a yellow petal landed on her cheek, Lily thought that yes, good bread smells wonderful, but friends smell even sweeter.