Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/16
M:2/4
K:G
['GFGB d2cd A^GAc e2e2 d^cde fgaf |1']  
X:1
L:1/16
M:2/4
K:G
 GFGB d2cd | A^GAc e2e2 | d^cde fgaf |1 g2B2 B>A :|2 g2B2 G4 | e^deB g2g2 | e^dec a2a2 | 
 ABcd e2g2 ||1 efdg G2G :|  