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:2/4
K:G
['D |]:', 'G>A Be', 'B/A/G/A/ BA Ae/f/ gf ed ef g>e']  
X:1
L:1/8
M:2/4
K:G
 D |]: GD G>A | Be eg/e/ | dB B/A/G/A/ | BA AB/A/ | GD G>A | Be e/f/g/e/ | dB AB/A/ |1 G2 GD :|2 
 G2 Ge/f/ |: gf ed | ef g>e | dB B/A/G/A/ | BA Ae/f/ | gf ed | ef g>e | dB AB/A/ |1 G2 Ge/f/ :|2 
 G2 GD |]  