Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
M:6/8
K:D
['F2 A', 'B2 g f2 b faa f^ef dgg'  
X:1
L:1/8
M:6/8
K:D
|: A/G/ | FAA d2 A | B^AB d=AG | F2 A dfe | dBB BB/A/G | F2 A dAA | B2 B def | g>fe dfe | dBB B2 :: 
 g | f2 b faa | f^ef dgg | fbb faa | ff/e/d e2 g | fbb f2 a | fed d>ef | gfe d>fe |1 d2 B B2 :|2 
 dB^A B2 ||  