Compose a piece by incorporating the set musical pattern in its alphabetical form along with the given melodic subject.
X:1
L:1/8
M:4/4
K:G
['BA GE DE GA', 'Bd gd']  
X:1
L:1/8
M:4/4
K:G
 BA GE DE GA | B2 BA BE E2 | BA GE DE GA | Bd Ad BG G2 :| Bd gd ed gd | Bd gd BA AG | Bd gd ed gd | 
 Bd Ad BG G2 | Bd gd ed gd | Bd gd BA AG | Bd ef g3 e | dB AB AG G2 ||  