Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
['B2{c} BA', 'd e2 f2 g3 d gfed edcB']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
"^Quick" DG | B2{c} BA GBed | B2{c} BA GBdB | edcB cBAG | FGAB A2 D2 | B2{c} BA GBed | 
 B2{c} BA GBdB | edcB cBAG | FDEF G2 :: z d | e2 f2 g3 d | gfed edcB | cBAG A3 d | e2 f2 g3 d | 
 gfed edcB | cBAG FDEF |[M:2/4] G2 :|  