In an appearance on The Early Show, Madeline said she learned that she was the viewers' choice when she was at school surrounded by her friends.
"We were watching it on the TV in — the class and I," she told host of the Web show, Adam Kontras of Adam and the Egos. "We were so nervous when we saw it. Then we all started screaming."
Now she said she is something of a celebrity at school.
"I mean, lots of people who have never really talked to me before started talking to me," she said. "They know who I am now."
Madeline, who sings in English, French, German, Italian and Latin, said she can identify with the emotion in the songs despite the language barrier.
"Sometimes, particularly with the Italian songs, I'll learn about the song and what it's about," she said. "The song I entered for the contest, it's from an opera by Puccini and it's a very sad song. The girl, she's crying. She — her father won't let her marry this man and she's very sad."
Madeline was inspired by British opera singer Charlotte Church and practices her performances with her grandmother, a retired music teacher who Madeline says has helped craft her burgeoning career in music.
Edwards performed "Chacun le sait" from the opera "La Fille du Regiment." She was accompanied on the piano by Steven Crawford, conductor of the Metropolitan Opera.
But "Living Room … Live!" isn't over yet. The next round is a battle of the bands.