The first time it occurred to her was shortly after she and Robin had arrived at her castle. Stuck in one wing cleaning all day while he was out hunting it was too quiet. She thought of how much she wished Henry was there, even if all he did was sit in the corner playing video games or reading while he listened to music. That was when she realized that she had magic, and that meant she could have music.
Making a speaker out of thin air she set it on the table and waved her hand, producing some of the music Henry and Regina had listened to back in Storybrooke. Henry and Regina (and the Queen if she was honest) had different tastes in music, but over the years they had built a streaming station that worked for everyone. It was a mix of many genres (oldies to folk rock to indie pop and others, even a little country) and Regina found that listening to this music took her back to afternoons spent with Henry.
Robin returned from his hunt a few hours later and went to find Regina to discuss dinner plans. As he approached the wing where he knew she was cleaning he began to hear the sound of -a guitar? other instruments? what were those sounds?- filtering down the hallway. He followed the sound and found Regina softly humming along with the music as she cleaned. He looked around for a musician and saw no one, but the sounds seemed to be emanating from a small grey metallic box that rested on a table. He listened and watched her for a few moments as the music ended, and a new song began.
"What on earth is that?" he said, filled with wonder that such a small device could emit such wonderful sounds.
Regina jumped and gasped, turning to look at him. "Robin! You scared me; I didn't hear you come in. That's just a speaker." He looked at her quizzically. "It's technology from Regina's world," she clarified. "It was a little too quiet so I thought I would play some music."
"I've never heard anything like this but I like it," he said. "Are these people playing this somewhere else right now and we can hear it? Who are they?"
She smiled, amused at how amazed he was by the speaker. "No this is a recording of a band that Henry and Regina used to listen to. If you like this there are some other bands you would probably like as well."
"I want to listen to all of them!" Robin said enthusiastically.
"Ok well probably not tonight," Regina said laughing, "but we can start listening to music if you want."
"Please," Robin said smiling and nodding decisively. Robin picked up a rag and began to help Regina clean as the two enjoyed the music together.