Andrei had learned the lessons of cooperation the hard way. A vampire alone, no matter how strong they were, would never live to grow old. Other vampires could strike, and humans had begun to grow savvy to what kills a vampire. Fire. Wood. Sharp implements. Andrei knew about working together by necessity, to survive. To carry on.
But this... This sacrifice that Caleb made not necessary. If a singer had the opportunity to be great, why wouldn't he?
"I did," Andrei said. He wanted to pry, but he also wanted to hear more. In the end, his desire won out. "Sing me another. Jolene.."