Compose a piece by incorporating the set musical pattern in its alphabetical form along with the given melodic subject.
X:1
L:1/8
Q:1/4=120
M:2/2
K:Bb
['(3(fga) bfdf Bdfb gecA B2 cd', 'Bfdf Bfdf']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:Bb
 (3(fga) | bfdf Bdfb | gecA B2 cd | efgf edcB | AGF=E F2 (3(fga) | bfdf Bdfb | gecA B2 cd | 
 egfe dcBA | B2 B2 B2 :: BA | Bfdf Bfdf | cgeg cgeg | Bfdf Bfdf | AFcF Afc[AF] | Bfdf Bfdf | 
 cgeg cgeg | fbag fedc | B2 B2 B2 :|  