The songs mentioned belong to Peter Paul and Mary, Alicia Keys, Dragonforce, Ill blu, Zandelle, and Majesty.
Gingka fiddled with the old radio in the kitchen, twisting the dials and pushing at it. Hyouma'd got it to get a signal, and it worked like a charm, but today only static would bust through the speaker, and they'd been dealing with it all morning.
"MAKE IT STOP!" yelled Kyouya threateningly.
"I'm trying, I'm trying! I could use a little help here you know - " Gingka was cut off as the radio started to play softly.
Puff the Magic Dragon?
Gingka turned the dial to change the channel. Nothing happened but a soft in-between click, and the same song played.
On every channel, the sang song came on. Kenta stood on tiptoes and gazed wide-eyed at the radio. Then he touched the dial lightly.
At his touch, the song changed instantly.
Dragon days?
"Try it again, Kenta."
This time, Where Dragons Rule blasted through the kitchen. Madoka yelled from the workshop:
"TURN THAT THING OFF!"
Kyouya shoved Kenta aside and fiddled with the power button, but the radio wouldn't turn off. Kenta punched desperately at the buttons, but all the songs were about dragons.
Dragon Pop. Dragon's Hoard. Guardians of the dragon grail. Finally the radio turned off and Kyouya, Gingka, and Kenta sprawled on the floor panting.
Finally Kenta looked over at Gingka. "This has got to mean something."
Gingka blinked at him, and then blinked again.
"I don't know, Kenta. I wouldn't get your hopes up just yet", he said doubtfully. "This could all be just a huge, confusing coincidence."
But as he and Kyouya left, Kenta stared up at the radio and was sure he saw a glimmer of something, glinting behind the grid set in the front. He stood up and pried the grid off the wooden frame.
A single marble lay in the bottom of the compartment, in the corner, framed by wood. Ribbons of gold wove through its yellow, red, and green. Kenta pocketed it absentmindedly and popped the grid back onto the front of the radio, and then headed off into the garden to think about the happenings of the past few days.
But if he'd looked closer, maybe down a little research, he'd have found that the marble was of a certain design: the dragon variety...
Dragon-pattern marbles are real! Look it up!