As Songbird, Melissa uses a derivation of technology created by the criminal Ulysses Klaw that converts sound into a malleable form of energy that has physical form and mass, termed "solid sound". She could initially create simple 3-dimensional sound/mass constructions, though as she has gained experience in her new supersonic sound abilities, she has learned to create more complex forms. She shapes and animates these by mental command and they only remain in existence for as long as she wills them to. She can "fly" by generating solid sound "wings" attached to her body; initially, these were created as glider-style wings, stretching from wrists to feet, though more recently they are shown attached to her back. Presumably, she animates the wings to flap or somehow generates a propulsive force with her powers, since her airborne speed and maneuverability to date extend well beyond simple gliding.