They stepped away from the piano to frolic around together as they sang the pre-chorus and chorus in harmony.

You've got qualities of a royal

Which qualities did he have? He wasn't dignified or regal or well-spoken. Regulus had dignity and was regal, but wasn't as well-spoken as he would like to be.

Patient, empathetic, and unafraid of toil

Regulus smiled slightly. Those were great qualities to have. He didn't think that he was any of those. Maybe, unafraid of toil. He did get near perfect grades in Hogwarts.

Bruno smiled happily. They really thought that he had these qualities? He just loved ensuring that people he loved were seen and heard.

Bright, observant, and loyal

Now those were qualities that Regulus was certain he had. He'd been loyal to his family and Lord Voldemort once upon a time. He'd give just about anything to have a relationship with his brother. They're not children anymore.

You've been planted in the right soil

Everyone laughed at the reference to Isabela. Pomona Sprout also would've made a great reference as well. Or even Neville Longbottom.