Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/8
M:4/4
K:G
['GABG cABG AD D/D/D', 'GB AD D/D/D']  
X:1
L:1/8
M:4/4
K:G
 A | GABG cABG | AD D/D/D F2 FA | GABG cABG | AD D/D/D G2 G :: B | dBGB d/c/B/A/ GB | 
 AD D/D/D F2 FB | dBGB d/c/B/A/ GB | AD D/D/D G2 GB | (d/c/B/A/) GB (d/c/B/A/) GB | 
 AD D/D/D F2 FB | dBcA BGAF | GcBA G2 G :|  