Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:6/8
K:G
['[GG,]2 B, G,A,B, GEF G2 E', 'DEF GAG{A} GFG ABA{B} A^GA BGc Bcd', 'c dce dce dAF G2 E DA,D']  
X:1
L:1/8
M:6/8
K:G
 [GG,]2 B, G,A,B, | GEF G2 E | EB,E G2 A | BGE E2 F | [GG,]2 B, G,A,B, | GEF G2 E | DA,D F2 d | 
 AFD DEF :: GAG{A} GFG | ABA{B} A^GA | BGc Bcd |{f} e^de{a} gfg | ded{e} d^cd | B=cB{Bc} BAG | 
 F/G/^GA BAG |1 AFD DEF :|2 AFD DFA |:[K:D] dce dce | dAF G2 E | EB,E G2 A | BGE E2 c | dce dce | 
 dAF G2 E | DA,D F2 d |1 AFD DFA :|2 AFD DEF ||  