You were still singing the song "so this is love by Ilene Woods" as you read the notes, you didn't even notice the front door open as Henry walked in so you continued singing, you had left your door open so he could hear you and once he recognized the song he chimed in when the male singing sang

"I'll touch every star in the sky~ So this is the miracle, that I've been dreaming of~ mmm~" he sang, trying to make you annoyed or even just embarrassed