Ar Tonelico (2006)

At a time when Aurica is saddened over her inability to fulfill her role as a Reyvateil, or one who can control magical powers through singing Songs, Lyner's airship comes crashing down upon her from the sky. Both of them search for an engineer to repair his airship, meeting Krusche. In the process, Lyner inadvertently teaches Aurica that the key to singing a successful Song is to want to help others from the bottom of one's heart.