Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:4/4
K:G
['d2 (3Bcd']  
X:1
L:1/8
M:4/4
K:G
 G2 dG eGdG | G2 dB ABdB | G2 gd egdG | FGAB cedB | G2 dG egdG | G2 dB ABdB | G2 dB eBdG | 
 FGAB cege | d2 (3Bcd gdBd | d2 (3Bcd cA A2 | d2 (3Bcd gdBd | dcAc BG G2 | d2 (3Bcd gdBG | 
 G2 BG AE E2 | BABc dedc | BcAc BGGF |]  