Anakin had the kind of mind that clung relentlessly to information introduced to it; he probably knew every song he'd ever heard. However, at the moment, very few of them came to mind. For some reason, one of them was Katy Perry's "Hot N Cold," which probably said something about Anakin that he didn't want to know. "I know a few. I don't think I know any that you know, though."
Occasionally, he would catch Rahne (or, given the nature of time travel, he would eventually catch Rahne singing a Scottish folk song or religious song or something under her breath, but he could never get her to sing out loud. Now would be the time to take advantage, but she was too sweet a little girl to co-opt. "My mother and my..." he hesitated on what, exactly, to call Winter, much less to a five-year-old, before settling on, "aunt, they used to sing me a song when I was even younger than you." Secure in the knowledge that if anyone were around, he would sense them, Anakin softly sang an old Alderaani lullaby.