Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
Q:1/2=90
M:3/2
K:A
['A4 c2 BA BG E2 GABc dBcA', 'A4 A4 cecA dfdB GEGB dfed c4']  
X:1
L:1/8
Q:1/2=90
M:3/2
K:A
 A4 c2 BA BG E2 | GABc dBcA G4 | EG B2 Ac e2 dfed | cBcA E2 G2 A4 :: A4 cecA dfdB | GEGB dfed c4 | 
 dcde fgag fe^de | B^dfa gfed e4- | eagf edcB c2 A2 | defe dcBA G4 | EG B2 Ac e2 dfed | 
 cBcA E2 G2 A4 :|  