Develop a musical piece incorporating the designated alphabet-based pattern and the supplied melodic theme.
X:1
L:1/8
M:4/4
K:D
['A2 f2{g} fe f2 B2 g2{a}', 'g2 A3 c efec [fd]4 faab afde']  
X:1
L:1/8
M:4/4
K:D
|:"D" a2 fd Adfa |"A7" gece"D" fddf | a2 fd Adfa |"A7" gece"D" d4 :| |"D" A2 f2{g} fe f2 | 
"G" B2 g2{a} gf g2 |"A7" A2 c2 efec |"D" dcde (3fga fd |"D" A2 f2{g} fe f2 |"G" B2 g2{a} gf g2 | 
"A7" A3 c efec |"D" d2"^(A)" [ed]2"D" [fd]4 |:"D" faab afde | fdad bdfd |"Em" efga bgef | 
 gebe"A7" geeg |"D" fgaf bfaf | defd"^(A7)" efde |"Bm" fBBA"^(G)" BcdB |"A7" AFEF"D" D4 :|  