Your download of Mary Had a Little Lamb sheet music for flute includes the melody written in all twelve keys, in standard treble clef notation. You receive a total of 12 separate writings of the music. Notes and lyrics are included. The melody matches that of the audio preview.
If you are a new flute student who is learning Mary Had a Little Lamb, be sure to check out the sheet music to Twinkle, Twinkle, Little Star. Studying the two together is a great learning opportunity.