Which of thesewoodwind instruments does not use bellows as a source of air?

Among woodwind instruments, the Flute does not use bellows as a source of air. Instead, it produces sound through the vibration of air across an opening. In contrast, instruments like the bagpipe or Accordion rely on bellows to push air through the reeds. Other woodwinds, such as clarinets and oboes, use a single or double reed mechanism but still do not incorporate bellows.