Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:2/4
K:Amix
['', 'G/A/B AA GE AA B/c/d', 'BG BG A/B/A/G/ E2 e2 f>g f/e/d/c/']  
X:1
L:1/8
M:2/4
K:Amix
 G/A/B |: AA GE | AA B/c/d | eg e^d | e2 G/A/B | AA GE | AA B/c/d | BA GE |1 A2 G/A/B :|2 A2 e2 |: 
 f>g f/e/d/c/ | A2 BG | BG A/B/A/G/ | E2 e2 | f>g f/e/d/c/ | A2 dB | dB c/d/c/B/ |1 A2 e2 :|2 
 A2 G/A/B ||  