Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/16
M:2/4
K:D
['FG A2>c2 BAGE c2>e2 d2cA G2>E2 D2D2']  
X:1
L:1/16
M:2/4
K:D
 FG | A2>c2 BAGE | c2>e2 d2cA | G2>E2 D2D2 | D6 FG | Ad (dc)(de) | f2>a2 (gf)(ed) | 
 e2>f2({a} ge)(dc) | d6 (FG) | A2d2 (dc)(de) | (f2>a2) (gfec) | (d2>e2) (dcAF) | G6 (FG) | 
 A2g2 f2e2 | d2>e2 dcAF | G2>F2 D2D2 | D6 ||  