Answer:
"The Bonnie Blue Flag", also known as "We Are a Band of Brothers", is an 1861 marching song associated with the Confederate States. The words were written by the entertainer Harry McCarthy, with the melody taken from the song "The Irish Jaunting Car". The song's title refers to the unofficial first flag of the Confederacy, the Bonnie Blue Flag. The left flag on the sheet-music to the reader's right is the Bonnie Blue Flag.
Step-by-step explanation: