Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
M:4/4
K:D
['fe .d2 FA']  
X:1
L:1/8
M:4/4
K:D
 fe | .d2 FA .A2 FA | AB de fg fe | .d2 FA .AF dF | ef fe dA Bc :|  