Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:2/4
K:D
['A2 FG A2 dc BGBe dcBA defd', 'dfed ecBA efge'  
X:1
L:1/8
M:2/4
K:D
 A2 FG A2 dc | BGBe dcBA | defd B2 ef | gefd dcBA | A2 FG A2 dc | BGBe dcBA | defd Bgfe | 
 dfec d4 :: dfed ecBA | efge fdAF | GBeG FAdF | EFGA GFED | dfed ecBA | efge fedc | dfA^c dgfe | 
 fdec d4 :|  