Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/16
M:2/4
K:G
['d2gf efge d2gd fdAB', 'b2bg a2af gage dBdg fdAB']  
X:1
L:1/16
M:2/4
K:G
 dB | G2GB d2gf | efge d2gd | fdAB cBce | dBGA B2BA | GFGB d2gf | efge d2gd | fdAB cdef | 
 gagf g2 :: ga | b2bg a2af | gage dBdg | fdAB cBce | dBGA B2ga | b2bg a2af | gage dBdg | 
 fdAB cdef | gagf g2 :|  