Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:4/4
K:G
['d>c B2 AG', 'z d']  
X:1
L:1/8
M:4/4
K:G
 d>c | B2 AG B>c d2 | g3 a b2 z e | (efgf) (edcB) | B2 A2 z2 d>c | B2 AG Bc d2 | g3 (a/b/) d2 z g | 
 (e>fg)(e fg)(ab) | g4 || | g2 | gbag gfed | g2 ab d2 z d | efgd edcB | B2 A2 z2 g>a | 
 b>gaf g>fed | egdB A2 z d | (e>fg)(e fg)(ab) | g4 ||  