the_debt_of_time

"This," Lily said, interrupting Mia and Mary's silent conversation with a bright smile,
"is called a transistor radio." Her green eyes lit up the same way that Harry's always did
when talking about Quidditch, or the way Sirius looked when plotting a devious prank.
Mia watched with an amused expression on her face, while Sirius sat down and
grinned at the redhead, his arms folded across his chest.
"It's a portable device that Muggles use to listen to music." Lily glanced between
Sirius and Mia, and her smile fell. "And... and... you've got magic versions don't you?"
"Yes," Mia admitted with a chuckle.
"But do go on," Sirius encouraged her. "Tell me about this thing called music," he
said sarcastically. "What is... mooseek?"
Lily glared at him.
"You're good fun, Evans." Sirius smirked as Lily shook her head, though she failed
to keep a grin off her face as she stormed away from them, rescuing Mary from Peter's
stories.
Turning the radio on, Sirius's amused smile turned genuine. "Muggles are
awesome."
"Have you ever listened to Muggle music?" Mia asked.
"Yes," Sirius said, fidgeting with the knobs and buttons. "Used to sneak into Muggle
London when Walburga took me to Diagon Alley. There was a record store I would hide
out in."
"I never knew that," Mia said with a bright smile.
"Because I just told you. Oh bugger this," he said in a frustrated voice and reached
for his wand, touching the top of the radio that was previously playing static but, with a
little magic, suddenly began playing loud Muggle music, clear as day.
"Lean on me, when you're not strong.. ."
Mia beamed, recalling listening to this song on a tape that her Muggle mother made
for her, unaware that most electronic devices would not work around magic but especially
at Hogwarts. "I love this song. It actually reminds me of you, Sirius."
Lily gasped, looking back at Sirius. "You're not supposed to use magic outside of
school!"
Everyone else chuckled sweetly at her, which only made her angrier.