Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:6/8
K:G
['G G>AG B>cB', 'A2 G B2 c d2 g baf']  
X:1
L:1/8
M:6/8
K:G
|: G | G>AG B>cB | d>ed (g<b)a | gdB cde | dgB A2 G | G>AG B>cB | dba g2 d | gdB cde | dBG A2 :: 
 G | B2 c d2 g | baf gdc | B2 b bag | f2 g adc | BAB cBc | dba g2 d | gdB cde | dBG A2 :|  