Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:4/4
K:D
['f2 fg fe d2 f^efg fedf e^def', 'B2 c=c^cB Acec |1 dcdf aA^G=G FDA,D']  
X:1
L:1/8
M:4/4
K:D
 f2 fg fe d2 | f^efg fedf | e^def gfge | B2 e2 ^d2 =d2 | c2 cd cB A2 | c=c^cd cBAc |2 dcde fedB | 
 A2 :|2 dcde fedc | d2 || FDA,D F2 F2 | E^DEG B2 B2 | c=c^cB Acec |1 dcdf aA^G=G | FDA,D F2 F2 | 
 E^DEG Be^d=d | c=c^cB Agfe | d2 :|2 dcdf Aa^g=g | fdAd fAaf | gece b2 ^ab | abc'b agfe | d2 ||  