Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
Q:1/4=100
M:2/4
K:A
['dB TB2({AB)} cABG', 'A,2 ecAc ef=ge fdcd AFED f^dBd fgaf']  
X:1
L:1/8
Q:1/4=100
M:2/4
K:A
 Ac Tc2({Bc)} | dB TB2({AB)} | cABG | AECA, | Ac TB2({Bc)} | dB TB2({AB)} | cABG | A2 A,2 :: ecAc | 
 ef=ge | fdcd | AFED | f^dBd | fgaf | gef^d | e4 | gbeg | fadf | ecac | BGFE | FAGB | AcBd | cABG | 
 A4 :|  